esgr-20221231
Enstar Group LTD00013638292022FYFALSETRUEFALSEBermudahttp://fasb.org/us-gaap/2022#AccountingStandardsUpdate201613Memberhttp://www.enstargroup.com/20221231#NetGainLossOnPurchaseAndDispositionOfBusinesshttp://fasb.org/us-gaap/2022#MarketableSecuritiesUnrealizedGainLosshttp://fasb.org/us-gaap/2022#MarketableSecuritiesUnrealizedGainLosshttp://fasb.org/us-gaap/2022#LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1http://fasb.org/us-gaap/2022#LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1http://fasb.org/us-gaap/2022#LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims10.0010.001P10D00013638292022-01-012022-12-310001363829us-gaap:CommonStockMember2022-01-012022-12-310001363829esgr:SeriesDPreferredStockDepositaryShareMember2022-01-012022-12-310001363829esgr:SeriesEPreferredStockDepositaryShareMember2022-01-012022-12-3100013638292022-06-30iso4217:USD0001363829esgr:VotingCommonStockMember2023-02-27xbrli:shares0001363829us-gaap:NonvotingCommonStockMember2023-02-2700013638292021-01-012021-12-3100013638292020-01-012020-12-3100013638292021-12-310001363829us-gaap:ShortTermInvestmentsMember2022-12-310001363829us-gaap:ShortTermInvestmentsMember2021-12-310001363829us-gaap:FixedMaturitiesMember2022-12-310001363829us-gaap:FixedMaturitiesMember2021-12-3100013638292022-12-310001363829us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2022-12-31iso4217:USDxbrli:shares0001363829esgr:VotingCommonStockMember2022-12-310001363829esgr:VotingCommonStockMember2021-12-310001363829us-gaap:CommonClassCMember2022-12-310001363829us-gaap:CommonClassCMember2021-12-310001363829esgr:CommonClassEMember2022-12-310001363829esgr:CommonClassEMember2021-12-310001363829us-gaap:SeriesCPreferredStockMember2022-12-310001363829us-gaap:SeriesCPreferredStockMember2021-12-310001363829us-gaap:SeriesDPreferredStockMember2022-12-310001363829us-gaap:SeriesDPreferredStockMember2021-12-310001363829us-gaap:SeriesEPreferredStockMember2021-12-310001363829us-gaap:SeriesEPreferredStockMember2022-12-310001363829esgr:InvestmentSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:InvestmentSegmentMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829esgr:VotingCommonStockMemberus-gaap:CommonStockMember2021-12-310001363829esgr:VotingCommonStockMemberus-gaap:CommonStockMember2020-12-310001363829esgr:VotingCommonStockMemberus-gaap:CommonStockMember2019-12-310001363829esgr:VotingCommonStockMemberus-gaap:CommonStockMember2022-01-012022-12-310001363829esgr:VotingCommonStockMemberus-gaap:CommonStockMember2021-01-012021-12-310001363829esgr:VotingCommonStockMemberus-gaap:CommonStockMember2020-01-012020-12-310001363829esgr:VotingCommonStockMemberus-gaap:CommonStockMember2022-12-310001363829us-gaap:CommonClassCMemberus-gaap:CommonStockMember2021-12-310001363829us-gaap:CommonClassCMemberus-gaap:CommonStockMember2020-12-310001363829us-gaap:CommonClassCMemberus-gaap:CommonStockMember2019-12-310001363829us-gaap:CommonClassCMemberus-gaap:CommonStockMember2022-01-012022-12-310001363829us-gaap:CommonClassCMemberus-gaap:CommonStockMember2021-01-012021-12-310001363829us-gaap:CommonClassCMemberus-gaap:CommonStockMember2020-01-012020-12-310001363829us-gaap:CommonClassCMemberus-gaap:CommonStockMember2022-12-310001363829esgr:CommonClassEMemberus-gaap:CommonStockMember2021-12-310001363829esgr:CommonClassEMemberus-gaap:CommonStockMember2020-12-310001363829esgr:CommonClassEMemberus-gaap:CommonStockMember2019-12-310001363829esgr:CommonClassEMemberus-gaap:CommonStockMember2022-01-012022-12-310001363829esgr:CommonClassEMemberus-gaap:CommonStockMember2021-01-012021-12-310001363829esgr:CommonClassEMemberus-gaap:CommonStockMember2020-01-012020-12-310001363829esgr:CommonClassEMemberus-gaap:CommonStockMember2022-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesCPreferredStockMember2021-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesCPreferredStockMember2022-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesCPreferredStockMember2020-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesCPreferredStockMember2019-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesDPreferredStockMember2022-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesDPreferredStockMember2021-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesDPreferredStockMember2019-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesDPreferredStockMember2020-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesEPreferredStockMember2022-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesEPreferredStockMember2021-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesEPreferredStockMember2020-12-310001363829us-gaap:PreferredStockMemberus-gaap:SeriesEPreferredStockMember2019-12-310001363829us-gaap:TreasuryStockMember2021-12-310001363829us-gaap:TreasuryStockMember2022-12-310001363829us-gaap:TreasuryStockMember2020-12-310001363829us-gaap:TreasuryStockMember2019-12-310001363829esgr:JointOwnershipPlanVotingOrdinarySharesMember2021-12-310001363829esgr:JointOwnershipPlanVotingOrdinarySharesMember2020-12-310001363829esgr:JointOwnershipPlanVotingOrdinarySharesMember2019-12-310001363829esgr:JointOwnershipPlanVotingOrdinarySharesMember2022-01-012022-12-310001363829esgr:JointOwnershipPlanVotingOrdinarySharesMember2021-01-012021-12-310001363829esgr:JointOwnershipPlanVotingOrdinarySharesMember2020-01-012020-12-310001363829esgr:JointOwnershipPlanVotingOrdinarySharesMember2022-12-310001363829us-gaap:AdditionalPaidInCapitalMember2021-12-310001363829us-gaap:AdditionalPaidInCapitalMember2020-12-310001363829us-gaap:AdditionalPaidInCapitalMember2019-12-310001363829us-gaap:AdditionalPaidInCapitalMemberesgr:VotingCommonStockMember2022-01-012022-12-310001363829us-gaap:AdditionalPaidInCapitalMemberesgr:VotingCommonStockMember2021-01-012021-12-310001363829us-gaap:AdditionalPaidInCapitalMemberesgr:VotingCommonStockMember2020-01-012020-12-310001363829us-gaap:AdditionalPaidInCapitalMember2022-01-012022-12-310001363829us-gaap:AdditionalPaidInCapitalMember2021-01-012021-12-310001363829us-gaap:AdditionalPaidInCapitalMember2020-01-012020-12-310001363829us-gaap:AdditionalPaidInCapitalMember2022-12-310001363829us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310001363829us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-310001363829us-gaap:AccumulatedOtherComprehensiveIncomeMember2019-12-310001363829us-gaap:AccumulatedTranslationAdjustmentMember2021-12-310001363829us-gaap:AccumulatedTranslationAdjustmentMember2020-12-310001363829us-gaap:AccumulatedTranslationAdjustmentMember2019-12-310001363829us-gaap:AccumulatedTranslationAdjustmentMember2022-01-012022-12-310001363829us-gaap:AccumulatedTranslationAdjustmentMember2021-01-012021-12-310001363829us-gaap:AccumulatedTranslationAdjustmentMember2020-01-012020-12-310001363829us-gaap:AccumulatedTranslationAdjustmentMember2022-12-310001363829us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-12-310001363829us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-12-310001363829us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2019-12-310001363829us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-01-012022-12-310001363829us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-01-012021-12-310001363829us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-01-012020-12-310001363829us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-12-310001363829us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-12-310001363829us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2020-12-310001363829us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2019-12-310001363829us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-01-012022-12-310001363829us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-01-012021-12-310001363829us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2020-01-012020-12-310001363829us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-12-310001363829us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310001363829us-gaap:RetainedEarningsMember2021-12-310001363829us-gaap:RetainedEarningsMember2020-12-310001363829us-gaap:RetainedEarningsMember2019-12-310001363829us-gaap:RetainedEarningsMember2022-01-012022-12-310001363829us-gaap:RetainedEarningsMember2021-01-012021-12-310001363829us-gaap:RetainedEarningsMember2020-01-012020-12-310001363829us-gaap:ChangeInAccountingPrincipleOtherMemberus-gaap:RetainedEarningsMember2021-12-310001363829us-gaap:ChangeInAccountingPrincipleOtherMemberus-gaap:RetainedEarningsMember2020-12-310001363829us-gaap:ChangeInAccountingPrincipleOtherMemberus-gaap:RetainedEarningsMember2019-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2021-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2019-12-310001363829us-gaap:RetainedEarningsMember2022-12-310001363829us-gaap:NoncontrollingInterestMember2021-12-310001363829us-gaap:NoncontrollingInterestMember2020-12-310001363829us-gaap:NoncontrollingInterestMember2019-12-310001363829us-gaap:NoncontrollingInterestMember2022-01-012022-12-310001363829us-gaap:NoncontrollingInterestMember2021-01-012021-12-310001363829us-gaap:NoncontrollingInterestMember2020-01-012020-12-310001363829us-gaap:NoncontrollingInterestMember2022-12-3100013638292020-12-310001363829us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2022-01-012022-12-310001363829us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2021-01-012021-12-310001363829us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2020-01-012020-12-3100013638292019-12-310001363829esgr:EnhanzedReMember2022-08-012022-08-31esgr:share-based_compensation_plan0001363829us-gaap:AccumulatedOtherComprehensiveIncomeMembersrt:ScenarioForecastMembersrt:MinimumMember2023-01-010001363829srt:MaximumMemberus-gaap:AccumulatedOtherComprehensiveIncomeMembersrt:ScenarioForecastMember2023-01-01esgr:Segment0001363829esgr:AtriumSegmentMember2020-01-012020-12-31xbrli:pure0001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829esgr:InvestmentSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829us-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829us-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829us-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829us-gaap:CorporateNonSegmentMember2022-01-012022-12-310001363829us-gaap:CorporateNonSegmentMember2021-01-012021-12-310001363829us-gaap:CorporateNonSegmentMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMembercountry:US2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMembercountry:US2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMembercountry:US2022-01-012022-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829country:US2022-01-012022-12-310001363829us-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMembercountry:GB2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMembercountry:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMembercountry:GB2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMembercountry:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMembercountry:GB2022-01-012022-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMembercountry:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829country:GB2022-01-012022-12-310001363829country:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:RunOffSegmentMembersrt:EuropeMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:RunOffSegmentMembersrt:EuropeMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829srt:EuropeMemberesgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMembersrt:EuropeMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829srt:EuropeMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829srt:EuropeMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829srt:EuropeMember2022-01-012022-12-310001363829srt:EuropeMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:RunOffSegmentMembersrt:AsiaMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:RunOffSegmentMembersrt:AsiaMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829srt:AsiaMemberesgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMembersrt:AsiaMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829srt:AsiaMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829srt:AsiaMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829srt:AsiaMember2022-01-012022-12-310001363829srt:AsiaMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:OtherGeographicLocationMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2022-01-012022-12-310001363829esgr:OtherGeographicLocationMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:OtherGeographicLocationMember2022-01-012022-12-310001363829esgr:OtherGeographicLocationMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829us-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMembercountry:US2021-01-012021-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMembercountry:US2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMembercountry:US2021-01-012021-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829country:US2021-01-012021-12-310001363829us-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMembercountry:GB2021-01-012021-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMembercountry:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMembercountry:GB2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMembercountry:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMembercountry:GB2021-01-012021-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMembercountry:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829country:GB2021-01-012021-12-310001363829country:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:RunOffSegmentMembersrt:EuropeMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:RunOffSegmentMembersrt:EuropeMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829srt:EuropeMemberesgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMembersrt:EuropeMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829srt:EuropeMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829srt:EuropeMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829srt:EuropeMember2021-01-012021-12-310001363829srt:EuropeMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:RunOffSegmentMembersrt:AsiaMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:RunOffSegmentMembersrt:AsiaMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829srt:AsiaMemberesgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMembersrt:AsiaMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829srt:AsiaMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829srt:AsiaMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829srt:AsiaMember2021-01-012021-12-310001363829srt:AsiaMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:OtherGeographicLocationMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2021-01-012021-12-310001363829esgr:OtherGeographicLocationMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:OtherGeographicLocationMember2021-01-012021-12-310001363829esgr:OtherGeographicLocationMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829us-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMembercountry:US2020-01-012020-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMembercountry:US2020-01-012020-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829country:US2020-01-012020-12-310001363829us-gaap:GeographicConcentrationRiskMembercountry:USesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMembercountry:GB2020-01-012020-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMembercountry:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMembercountry:GB2020-01-012020-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMembercountry:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829country:GB2020-01-012020-12-310001363829country:GBus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:RunOffSegmentMembersrt:EuropeMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829esgr:RunOffSegmentMembersrt:EuropeMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829srt:EuropeMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829srt:EuropeMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829srt:EuropeMember2020-01-012020-12-310001363829srt:EuropeMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:RunOffSegmentMembersrt:AsiaMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829esgr:RunOffSegmentMembersrt:AsiaMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829srt:AsiaMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829srt:AsiaMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829srt:AsiaMember2020-01-012020-12-310001363829srt:AsiaMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberesgr:OtherGeographicLocationMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:OtherGeographicLocationMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310001363829esgr:OtherGeographicLocationMemberesgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:OtherGeographicLocationMember2020-01-012020-12-310001363829esgr:OtherGeographicLocationMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:LegacyUnderwritingSegmentMemberus-gaap:OperatingSegmentsMemberus-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829us-gaap:GeographicConcentrationRiskMemberesgr:PremiumsWrittenGrossMember2020-01-012020-12-310001363829esgr:EnhanzedReMember2021-09-010001363829esgr:EnhanzedReMember2021-09-012021-09-010001363829esgr:EnhanzedReMember2021-09-300001363829esgr:AllianzMemberesgr:EnhanzedReMemberesgr:EnhanzedReMember2022-12-280001363829esgr:AllianzMemberesgr:EnhanzedReMember2022-12-282022-12-280001363829esgr:EnhanzedReMember2021-09-012021-09-300001363829esgr:EnhanzedReMember2021-07-012021-09-300001363829esgr:EnhanzedReMember2021-01-012021-12-310001363829esgr:EnhanzedReMember2021-06-30esgr:Quarter0001363829esgr:EnhanzedReMember2021-09-012021-12-310001363829esgr:EnhanzedReMember2020-01-012020-12-310001363829us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberesgr:AtriumUnderwritingGroupLimitedMember2021-01-012021-12-310001363829us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberesgr:AtriumUnderwritingGroupLimitedMember2020-01-012020-12-310001363829us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberesgr:StarStoneUnderwritingLimitedSULMember2021-01-012021-12-310001363829us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberesgr:StarStoneUnderwritingLimitedSULMember2020-01-012020-12-310001363829us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberesgr:OtherSubsidiariesMember2021-01-012021-12-310001363829us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberesgr:OtherSubsidiariesMember2020-01-012020-12-310001363829esgr:NorthshoreHoldingsLimitedMember2022-12-310001363829esgr:CoreSpecialtyMember2022-12-310001363829esgr:ArdenMember2022-12-310001363829esgr:ArdenMember2021-12-310001363829esgr:Atrium5Member2022-12-310001363829esgr:Atrium5Member2021-12-310001363829esgr:AtriumSyndicate609Member2022-12-310001363829esgr:AtriumSyndicate609Member2021-12-310001363829esgr:StarStoneUSMemberus-gaap:DiscontinuedOperationsDisposedOfBySaleMember2020-11-300001363829esgr:StarStoneUSMemberus-gaap:DiscontinuedOperationsDisposedOfBySaleMember2020-01-012020-12-310001363829esgr:StarStoneUSMemberus-gaap:DiscontinuedOperationsDisposedOfBySaleMember2020-12-310001363829esgr:StarStoneUSMemberus-gaap:DiscontinuedOperationsDisposedOfBySaleMember2022-01-012022-12-310001363829esgr:StarStoneUSMemberus-gaap:DiscontinuedOperationsDisposedOfBySaleMember2021-01-012021-12-310001363829esgr:CoreSpecialtyMember2021-12-310001363829esgr:CoreSpecialtyMember2022-01-012022-12-310001363829esgr:CoreSpecialtyMember2021-01-012021-12-310001363829us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMemberesgr:StarStoneUnderwritingLimitedSULMember2021-01-012021-03-310001363829esgr:InigoMember2021-03-150001363829esgr:InigoMember2022-12-310001363829esgr:InigoMember2021-12-310001363829esgr:InigoMember2022-01-012022-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:USTreasuryAndGovernmentMember2022-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:USTreasuryAndGovernmentMember2022-12-310001363829us-gaap:USTreasuryAndGovernmentMemberesgr:FundsHeldDirectlyManagedMember2022-12-310001363829us-gaap:USTreasuryAndGovernmentMember2022-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:ForeignGovernmentDebtMember2022-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:ForeignGovernmentDebtMember2022-12-310001363829us-gaap:ForeignGovernmentDebtMemberesgr:FundsHeldDirectlyManagedMember2022-12-310001363829us-gaap:ForeignGovernmentDebtMember2022-12-310001363829us-gaap:ShortTermInvestmentsMemberesgr:OtherGovernmentAgenciesDebtSecuritiesMember2022-12-310001363829us-gaap:FixedMaturitiesMemberesgr:OtherGovernmentAgenciesDebtSecuritiesMember2022-12-310001363829esgr:FundsHeldDirectlyManagedMemberesgr:OtherGovernmentAgenciesDebtSecuritiesMember2022-12-310001363829esgr:OtherGovernmentAgenciesDebtSecuritiesMember2022-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310001363829us-gaap:CorporateDebtSecuritiesMemberesgr:FundsHeldDirectlyManagedMember2022-12-310001363829us-gaap:CorporateDebtSecuritiesMember2022-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:MunicipalBondsMember2022-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:MunicipalBondsMember2022-12-310001363829us-gaap:MunicipalBondsMemberesgr:FundsHeldDirectlyManagedMember2022-12-310001363829us-gaap:MunicipalBondsMember2022-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-12-310001363829esgr:FundsHeldDirectlyManagedMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-12-310001363829us-gaap:ResidentialMortgageBackedSecuritiesMember2022-12-310001363829us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:ShortTermInvestmentsMember2022-12-310001363829us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2022-12-310001363829us-gaap:CommercialMortgageBackedSecuritiesMemberesgr:FundsHeldDirectlyManagedMember2022-12-310001363829us-gaap:CommercialMortgageBackedSecuritiesMember2022-12-310001363829us-gaap:AssetBackedSecuritiesMemberus-gaap:ShortTermInvestmentsMember2022-12-310001363829us-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2022-12-310001363829us-gaap:AssetBackedSecuritiesMemberesgr:FundsHeldDirectlyManagedMember2022-12-310001363829us-gaap:AssetBackedSecuritiesMember2022-12-310001363829us-gaap:StructuredFinanceMemberus-gaap:ShortTermInvestmentsMember2022-12-310001363829us-gaap:StructuredFinanceMemberus-gaap:FixedMaturitiesMember2022-12-310001363829us-gaap:StructuredFinanceMemberesgr:FundsHeldDirectlyManagedMember2022-12-310001363829us-gaap:StructuredFinanceMember2022-12-310001363829esgr:FundsHeldDirectlyManagedMember2022-12-310001363829us-gaap:ConvertibleDebtSecuritiesMember2022-12-310001363829us-gaap:EmbeddedDerivativeFinancialInstrumentsMember2022-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:USTreasuryAndGovernmentMember2021-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:USTreasuryAndGovernmentMember2021-12-310001363829us-gaap:USTreasuryAndGovernmentMemberesgr:FundsHeldDirectlyManagedMember2021-12-310001363829us-gaap:USTreasuryAndGovernmentMember2021-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:ForeignGovernmentDebtMember2021-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:ForeignGovernmentDebtMember2021-12-310001363829us-gaap:ForeignGovernmentDebtMemberesgr:FundsHeldDirectlyManagedMember2021-12-310001363829us-gaap:ForeignGovernmentDebtMember2021-12-310001363829us-gaap:ShortTermInvestmentsMemberesgr:OtherGovernmentAgenciesDebtSecuritiesMember2021-12-310001363829us-gaap:FixedMaturitiesMemberesgr:OtherGovernmentAgenciesDebtSecuritiesMember2021-12-310001363829esgr:FundsHeldDirectlyManagedMemberesgr:OtherGovernmentAgenciesDebtSecuritiesMember2021-12-310001363829esgr:OtherGovernmentAgenciesDebtSecuritiesMember2021-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:CorporateDebtSecuritiesMember2021-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:CorporateDebtSecuritiesMember2021-12-310001363829us-gaap:CorporateDebtSecuritiesMemberesgr:FundsHeldDirectlyManagedMember2021-12-310001363829us-gaap:CorporateDebtSecuritiesMember2021-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:MunicipalBondsMember2021-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:MunicipalBondsMember2021-12-310001363829us-gaap:MunicipalBondsMemberesgr:FundsHeldDirectlyManagedMember2021-12-310001363829us-gaap:MunicipalBondsMember2021-12-310001363829us-gaap:ShortTermInvestmentsMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310001363829us-gaap:FixedMaturitiesMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310001363829esgr:FundsHeldDirectlyManagedMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310001363829us-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310001363829us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:ShortTermInvestmentsMember2021-12-310001363829us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2021-12-310001363829us-gaap:CommercialMortgageBackedSecuritiesMemberesgr:FundsHeldDirectlyManagedMember2021-12-310001363829us-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310001363829us-gaap:AssetBackedSecuritiesMemberus-gaap:ShortTermInvestmentsMember2021-12-310001363829us-gaap:AssetBackedSecuritiesMemberus-gaap:FixedMaturitiesMember2021-12-310001363829us-gaap:AssetBackedSecuritiesMemberesgr:FundsHeldDirectlyManagedMember2021-12-310001363829us-gaap:AssetBackedSecuritiesMember2021-12-310001363829us-gaap:StructuredFinanceMemberus-gaap:ShortTermInvestmentsMember2021-12-310001363829us-gaap:StructuredFinanceMemberus-gaap:FixedMaturitiesMember2021-12-310001363829us-gaap:StructuredFinanceMemberesgr:FundsHeldDirectlyManagedMember2021-12-310001363829us-gaap:StructuredFinanceMember2021-12-310001363829esgr:FundsHeldDirectlyManagedMember2021-12-310001363829us-gaap:ConvertibleDebtSecuritiesMember2021-12-310001363829us-gaap:EmbeddedDerivativeFinancialInstrumentsMember2021-12-310001363829us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2022-12-310001363829us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2021-12-310001363829esgr:InvestmerntNonIncomeProducingMember2022-12-310001363829us-gaap:ForeignGovernmentDebtSecuritiesMember2022-12-310001363829us-gaap:ForeignGovernmentDebtSecuritiesMember2021-12-31esgr:Security0001363829us-gaap:CorporateDebtSecuritiesMember2020-12-310001363829esgr:OtherGovernmentAgenciesDebtSecuritiesMember2022-01-012022-12-310001363829us-gaap:CorporateDebtSecuritiesMember2022-01-012022-12-310001363829us-gaap:CorporateDebtSecuritiesMember2021-01-012021-12-310001363829us-gaap:ExchangeTradedMemberus-gaap:EquitySecuritiesMember2022-12-310001363829us-gaap:ExchangeTradedMemberus-gaap:EquitySecuritiesMember2021-12-310001363829us-gaap:ExchangeTradedFundsMember2022-12-310001363829us-gaap:ExchangeTradedFundsMember2021-12-310001363829us-gaap:EquitySecuritiesMemberus-gaap:OverTheCounterMember2022-12-310001363829us-gaap:EquitySecuritiesMemberus-gaap:OverTheCounterMember2021-12-310001363829us-gaap:HedgeFundsMember2022-12-310001363829us-gaap:HedgeFundsMember2021-12-310001363829us-gaap:FixedIncomeFundsMember2022-12-310001363829us-gaap:FixedIncomeFundsMember2021-12-310001363829us-gaap:PrivateEquityFundsMember2022-12-310001363829us-gaap:PrivateEquityFundsMember2021-12-310001363829esgr:PrivateCreditFundsMember2022-12-310001363829esgr:PrivateCreditFundsMember2021-12-310001363829us-gaap:EquityFundsMember2022-12-310001363829us-gaap:EquityFundsMember2021-12-310001363829esgr:CLOEquityFundsMember2022-12-310001363829esgr:CLOEquityFundsMember2021-12-310001363829esgr:CLOEquityMember2022-12-310001363829esgr:CLOEquityMember2021-12-310001363829us-gaap:RealEstateFundsMember2022-12-310001363829us-gaap:RealEstateFundsMember2021-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:OverTheCounterMemberus-gaap:EquitySecuritiesMemberesgr:RestrictionPeriodLessThanOneYearMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodOneToTwoYearsMemberus-gaap:OverTheCounterMemberus-gaap:EquitySecuritiesMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodTwoToThreeYearsMemberus-gaap:OverTheCounterMemberus-gaap:EquitySecuritiesMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodMoreThanThreeYearsMemberus-gaap:OverTheCounterMemberus-gaap:EquitySecuritiesMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:OverTheCounterMemberus-gaap:EquitySecuritiesMemberesgr:RestrictionPeriodNotEligibleRestrictedMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:OverTheCounterMemberus-gaap:EquitySecuritiesMember2022-12-310001363829us-gaap:HedgeFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodLessThanOneYearMember2022-12-310001363829us-gaap:HedgeFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodOneToTwoYearsMember2022-12-310001363829us-gaap:HedgeFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodTwoToThreeYearsMember2022-12-310001363829us-gaap:HedgeFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodMoreThanThreeYearsMember2022-12-310001363829us-gaap:HedgeFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodNotEligibleRestrictedMember2022-12-310001363829us-gaap:HedgeFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodLessThanOneYearMemberus-gaap:FixedIncomeFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodOneToTwoYearsMemberus-gaap:FixedIncomeFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodTwoToThreeYearsMemberus-gaap:FixedIncomeFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodMoreThanThreeYearsMemberus-gaap:FixedIncomeFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodNotEligibleRestrictedMemberus-gaap:FixedIncomeFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FixedIncomeFundsMember2022-12-310001363829us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodLessThanOneYearMember2022-12-310001363829us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodOneToTwoYearsMember2022-12-310001363829us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodTwoToThreeYearsMember2022-12-310001363829us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodMoreThanThreeYearsMember2022-12-310001363829us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodNotEligibleRestrictedMember2022-12-310001363829us-gaap:PrivateEquityFundsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:PrivateCreditFundsMemberesgr:RestrictionPeriodLessThanOneYearMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:PrivateCreditFundsMemberesgr:RestrictionPeriodOneToTwoYearsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:PrivateCreditFundsMemberesgr:RestrictionPeriodTwoToThreeYearsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodMoreThanThreeYearsMemberesgr:PrivateCreditFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:PrivateCreditFundsMemberesgr:RestrictionPeriodNotEligibleRestrictedMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:PrivateCreditFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:CLOEquityFundsMemberesgr:RestrictionPeriodLessThanOneYearMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:CLOEquityFundsMemberesgr:RestrictionPeriodOneToTwoYearsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:CLOEquityFundsMemberesgr:RestrictionPeriodTwoToThreeYearsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodMoreThanThreeYearsMemberesgr:CLOEquityFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:CLOEquityFundsMemberesgr:RestrictionPeriodNotEligibleRestrictedMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:CLOEquityFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:RealEstateFundsMemberesgr:RestrictionPeriodLessThanOneYearMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodOneToTwoYearsMemberus-gaap:RealEstateFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodTwoToThreeYearsMemberus-gaap:RealEstateFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodMoreThanThreeYearsMemberus-gaap:RealEstateFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:RealEstateFundsMemberesgr:RestrictionPeriodNotEligibleRestrictedMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:RealEstateFundsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodLessThanOneYearMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodOneToTwoYearsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodTwoToThreeYearsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodMoreThanThreeYearsMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberesgr:RestrictionPeriodNotEligibleRestrictedMember2022-12-310001363829us-gaap:FairValueMeasuredAtNetAssetValuePerShareMember2022-12-310001363829esgr:InvestmentSubjectToGatesAndSidePocketsMember2022-12-310001363829us-gaap:CommonStockMemberesgr:HHCTCOHoldingsLimitedMember2022-12-310001363829esgr:HHCTCOHoldingsLimitedMember2022-12-310001363829us-gaap:CommonStockMemberesgr:HHCTCOHoldingsLimitedMember2021-12-310001363829esgr:HHCTCOHoldingsLimitedMember2021-12-310001363829us-gaap:CommonStockMemberesgr:MonumentMember2022-12-310001363829esgr:MonumentMember2022-12-310001363829us-gaap:CommonStockMemberesgr:MonumentMember2021-12-310001363829esgr:MonumentMember2021-12-310001363829esgr:OtherEquityMethodInvestmentsMember2022-12-310001363829esgr:OtherEquityMethodInvestmentsMember2021-12-310001363829esgr:CitcoIIILimitedMemberus-gaap:ConvertiblePreferredStockMemberesgr:HHCTCOHoldingsLimitedMember2021-12-310001363829esgr:CitcoIIILimitedMemberus-gaap:ConvertiblePreferredStockMemberesgr:HHCTCOHoldingsLimitedMember2022-12-310001363829esgr:CitcoIIILimitedMemberesgr:HHCTCOHoldingsLimitedMember2022-12-310001363829esgr:CitcoIIILimitedMemberesgr:HHCTCOHoldingsLimitedMember2021-12-310001363829us-gaap:EquityMethodInvestmentsMember2022-12-310001363829us-gaap:EquityMethodInvestmentsMember2021-12-310001363829us-gaap:EquityMethodInvestmentsMember2022-01-012022-12-310001363829us-gaap:EquityMethodInvestmentsMember2021-01-012021-12-310001363829us-gaap:EquityMethodInvestmentsMember2020-01-012020-12-310001363829esgr:OwnershipPercentage100PercentMember2022-12-310001363829esgr:EquityMethodInvestmentMeasuredAtFairValueOptionMemberesgr:OwnershipPercentage100PercentMember2022-12-310001363829esgr:OwnershipPercentage100PercentMember2021-12-310001363829esgr:EquityMethodInvestmentMeasuredAtFairValueOptionMemberesgr:OwnershipPercentage100PercentMember2021-12-310001363829esgr:OwnershipPercentageTwentyToNinetyNinePercentMember2022-12-310001363829esgr:OwnershipPercentageTwentyToNinetyNinePercentMemberesgr:EquityMethodInvestmentMeasuredAtFairValueOptionMember2022-12-310001363829esgr:OwnershipPercentageTwentyToNinetyNinePercentMember2021-12-310001363829esgr:OwnershipPercentageTwentyToNinetyNinePercentMemberesgr:EquityMethodInvestmentMeasuredAtFairValueOptionMember2021-12-310001363829esgr:OwnershipPercentageThreeToNineteenPercentMember2022-12-310001363829esgr:OwnershipPercentageThreeToNineteenPercentMemberesgr:EquityMethodInvestmentMeasuredAtFairValueOptionMember2022-12-310001363829esgr:OwnershipPercentageThreeToNineteenPercentMember2021-12-310001363829esgr:OwnershipPercentageThreeToNineteenPercentMemberesgr:EquityMethodInvestmentMeasuredAtFairValueOptionMember2021-12-310001363829esgr:EquityMethodInvestmentMeasuredAtFairValueOptionMember2022-12-310001363829esgr:EquityMethodInvestmentMeasuredAtFairValueOptionMember2021-12-310001363829us-gaap:FairValueInputsLevel3Memberesgr:FundsHeldByReinsuredCompaniesMemberesgr:ValuationTechniqueMonteCarloSimulationModelAndDiscountedCashFlowAnalysisMember2022-12-310001363829us-gaap:EmbeddedDerivativeFinancialInstrumentsMember2022-01-012022-12-310001363829us-gaap:FixedMaturitiesMember2022-01-012022-12-310001363829us-gaap:FixedMaturitiesMember2021-01-012021-12-310001363829us-gaap:FixedMaturitiesMember2020-01-012020-12-310001363829esgr:ShortTermInvestmentsAndCashEquivalentsMember2022-01-012022-12-310001363829esgr:ShortTermInvestmentsAndCashEquivalentsMember2021-01-012021-12-310001363829esgr:ShortTermInvestmentsAndCashEquivalentsMember2020-01-012020-12-310001363829esgr:FundsHeldMember2022-01-012022-12-310001363829esgr:FundsHeldMember2021-01-012021-12-310001363829esgr:FundsHeldMember2020-01-012020-12-310001363829esgr:FundsHeldDirectlyManagedMember2022-01-012022-12-310001363829esgr:FundsHeldDirectlyManagedMember2021-01-012021-12-310001363829esgr:FundsHeldDirectlyManagedMember2020-01-012020-12-310001363829esgr:FixedMaturitiesandCashandCashEquivalentsMember2022-01-012022-12-310001363829esgr:FixedMaturitiesandCashandCashEquivalentsMember2021-01-012021-12-310001363829esgr:FixedMaturitiesandCashandCashEquivalentsMember2020-01-012020-12-310001363829us-gaap:EquitySecuritiesMember2022-01-012022-12-310001363829us-gaap:EquitySecuritiesMember2021-01-012021-12-310001363829us-gaap:EquitySecuritiesMember2020-01-012020-12-310001363829us-gaap:OtherInvestmentsMember2022-01-012022-12-310001363829us-gaap:OtherInvestmentsMember2021-01-012021-12-310001363829us-gaap:OtherInvestmentsMember2020-01-012020-12-310001363829esgr:EquitiesandOtherInvestmentsMember2022-01-012022-12-310001363829esgr:EquitiesandOtherInvestmentsMember2021-01-012021-12-310001363829esgr:EquitiesandOtherInvestmentsMember2020-01-012020-12-310001363829us-gaap:SegmentContinuingOperationsMember2022-01-012022-12-310001363829us-gaap:SegmentContinuingOperationsMember2021-01-012021-12-310001363829us-gaap:SegmentContinuingOperationsMember2020-01-012020-12-310001363829us-gaap:DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember2022-01-012022-12-310001363829us-gaap:DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember2021-01-012021-12-310001363829us-gaap:DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember2020-01-012020-12-310001363829us-gaap:AssetPledgedAsCollateralMember2022-12-310001363829us-gaap:AssetPledgedAsCollateralMember2021-12-31esgr:syndicate0001363829us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:ForeignExchangeForwardMember2022-12-310001363829us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:ForeignExchangeForwardMember2021-12-310001363829us-gaap:NondesignatedMemberus-gaap:ForeignExchangeForwardMember2022-12-310001363829us-gaap:NondesignatedMemberus-gaap:ForeignExchangeForwardMember2021-12-310001363829us-gaap:OtherContractMemberus-gaap:NondesignatedMember2022-12-310001363829us-gaap:OtherContractMemberus-gaap:NondesignatedMember2021-12-310001363829us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:ForeignExchangeForwardMember2022-01-012022-12-310001363829us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:ForeignExchangeForwardMember2021-01-012021-12-310001363829us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:ForeignExchangeForwardMember2020-01-012020-12-310001363829us-gaap:NondesignatedMemberus-gaap:ForeignExchangeForwardMember2022-01-012022-12-310001363829us-gaap:NondesignatedMemberus-gaap:ForeignExchangeForwardMember2021-01-012021-12-310001363829us-gaap:NondesignatedMemberus-gaap:ForeignExchangeForwardMember2020-01-012020-12-310001363829esgr:TopTenReinsurersMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829esgr:TopTenReinsurersMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2022-01-012022-12-310001363829esgr:TopTenReinsurersMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829esgr:TopTenReinsurersMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2021-01-012021-12-310001363829us-gaap:ReinsuranceRecoverableMemberesgr:OtherReinsurersBalancesGreaterThanOneMillionDollarsMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829us-gaap:ReinsuranceRecoverableMemberesgr:OtherReinsurersBalancesGreaterThanOneMillionDollarsMemberus-gaap:ReinsurerConcentrationRiskMember2022-01-012022-12-310001363829us-gaap:ReinsuranceRecoverableMemberesgr:OtherReinsurersBalancesGreaterThanOneMillionDollarsMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829us-gaap:ReinsuranceRecoverableMemberesgr:OtherReinsurersBalancesGreaterThanOneMillionDollarsMemberus-gaap:ReinsurerConcentrationRiskMember2021-01-012021-12-310001363829us-gaap:ReinsuranceRecoverableMemberesgr:OtherReinsurersBalancesLessThanOneMillionDollarsMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829us-gaap:ReinsuranceRecoverableMemberesgr:OtherReinsurersBalancesLessThanOneMillionDollarsMemberus-gaap:ReinsurerConcentrationRiskMember2022-01-012022-12-310001363829us-gaap:ReinsuranceRecoverableMemberesgr:OtherReinsurersBalancesLessThanOneMillionDollarsMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829us-gaap:ReinsuranceRecoverableMemberesgr:OtherReinsurersBalancesLessThanOneMillionDollarsMemberus-gaap:ReinsurerConcentrationRiskMember2021-01-012021-12-310001363829us-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829us-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2022-01-012022-12-310001363829us-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829us-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2021-01-012021-12-310001363829esgr:TopTenReinsurersRatedAMinusOrHigherMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-31esgr:reinsurer0001363829esgr:TopTenReinsurersRatedAMinusOrHigherMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829esgr:TopTenReinsurersNonRatedReinsurersMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829esgr:TopTenReinsurersNonRatedReinsurersMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829esgr:TopTenReinsurersMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829esgr:TopTenReinsurersMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829esgr:LloydsSyndicateMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829esgr:LloydsSyndicateMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829esgr:MichiganCatastrophicClaimsAssociationsMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829esgr:MichiganCatastrophicClaimsAssociationsMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829esgr:MichiganCatastrophicClaimsAssociationsMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829esgr:MichiganCatastrophicClaimsAssociationsMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829esgr:TopTenReinsurersNonRatedReinsurersUSWorkersCompensationReinsurancePoolMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2022-12-310001363829esgr:TopTenReinsurersNonRatedReinsurersUSWorkersCompensationReinsurancePoolMemberus-gaap:ReinsuranceRecoverableMemberus-gaap:ReinsurerConcentrationRiskMember2021-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2019-12-310001363829srt:ScenarioPreviouslyReportedMember2022-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2022-12-310001363829srt:ScenarioPreviouslyReportedMember2021-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2021-12-310001363829srt:ScenarioPreviouslyReportedMember2022-01-012022-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2022-01-012022-12-310001363829srt:ScenarioPreviouslyReportedMember2021-01-012021-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2021-01-012021-12-310001363829srt:ScenarioPreviouslyReportedMember2020-01-012020-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2020-01-012020-12-310001363829srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2021-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMemberus-gaap:RetainedEarningsMember2021-12-310001363829srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2022-01-012022-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMemberus-gaap:RetainedEarningsMember2022-01-012022-12-310001363829srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2022-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMemberus-gaap:RetainedEarningsMember2022-12-310001363829srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2020-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310001363829srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2019-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMemberus-gaap:RetainedEarningsMember2019-12-310001363829srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2021-01-012021-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMemberus-gaap:RetainedEarningsMember2021-01-012021-12-310001363829srt:ScenarioPreviouslyReportedMemberus-gaap:RetainedEarningsMember2020-01-012020-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMemberus-gaap:RetainedEarningsMember2020-01-012020-12-310001363829esgr:ChangeInAccountingPrincipleAndAccountingStandardsUpdateMembersrt:ScenarioPreviouslyReportedMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310001363829esgr:ChangeInAccountingPrincipleAndAccountingStandardsUpdateMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310001363829esgr:ChangeInAccountingPrincipleAndAccountingStandardsUpdateMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310001363829esgr:ChangeInAccountingPrincipleAndAccountingStandardsUpdateMembersrt:ScenarioPreviouslyReportedMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2019-12-310001363829esgr:ChangeInAccountingPrincipleAndAccountingStandardsUpdateMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMemberus-gaap:RetainedEarningsMember2019-12-310001363829esgr:ChangeInAccountingPrincipleAndAccountingStandardsUpdateMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2019-12-310001363829srt:ScenarioPreviouslyReportedMember2020-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2020-12-310001363829srt:ScenarioPreviouslyReportedMember2019-12-310001363829srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2019-12-310001363829srt:ScenarioPreviouslyReportedMembersrt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2020-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2020-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2020-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2021-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2020-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2021-12-310001363829srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2019-12-310001363829esgr:AssumedLifeSegmentMember2022-01-012022-12-310001363829esgr:AsbestosExposureMemberesgr:RunOffSegmentMember2022-01-012022-12-310001363829esgr:AsbestosExposureMemberesgr:RunOffSegmentMember2021-01-012021-12-310001363829esgr:AsbestosExposureMemberesgr:RunOffSegmentMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberesgr:EnvironmentalExposureMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:EnvironmentalExposureMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:EnvironmentalExposureMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMember2020-01-012020-12-310001363829esgr:MarineAviationandTransitExposureMemberesgr:RunOffSegmentMember2022-01-012022-12-310001363829esgr:MarineAviationandTransitExposureMemberesgr:RunOffSegmentMember2021-01-012021-12-310001363829esgr:MarineAviationandTransitExposureMemberesgr:RunOffSegmentMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberesgr:ConstructionDefectExposureMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:ConstructionDefectExposureMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:ConstructionDefectExposureMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberesgr:ProfessionalIndemnityDirectorsOfficersMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:ProfessionalIndemnityDirectorsOfficersMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:ProfessionalIndemnityDirectorsOfficersMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberesgr:MotorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:MotorMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:MotorMember2020-01-012020-12-310001363829esgr:RunOffSegmentMemberus-gaap:PropertyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:PropertyInsuranceProductLineMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberus-gaap:PropertyInsuranceProductLineMember2020-01-012020-12-310001363829us-gaap:OtherShortdurationInsuranceProductLineMemberesgr:RunOffSegmentMember2022-01-012022-12-310001363829us-gaap:OtherShortdurationInsuranceProductLineMemberesgr:RunOffSegmentMember2021-01-012021-12-310001363829us-gaap:OtherShortdurationInsuranceProductLineMemberesgr:RunOffSegmentMember2020-01-012020-12-310001363829esgr:RunOffSegmentMember2022-01-012022-12-310001363829esgr:RunOffSegmentMember2021-01-012021-12-310001363829esgr:RunOffSegmentMember2020-01-012020-12-310001363829esgr:AssumedLifeSegmentMember2021-01-012021-12-310001363829esgr:AssumedLifeSegmentMember2020-01-012020-12-310001363829esgr:LegacyUnderwritingSegmentMember2022-01-012022-12-310001363829esgr:LegacyUnderwritingSegmentMember2021-01-012021-12-310001363829esgr:LegacyUnderwritingSegmentMember2020-01-012020-12-310001363829esgr:WorkersCompensation15CommutationsMemberesgr:RunOffSegmentMember2022-01-012022-12-31esgr:commutation0001363829esgr:AllianzMemberesgr:AssumedLifeSegmentMember2022-01-012022-12-310001363829esgr:AllianzMemberesgr:AssumedLifeSegmentMemberesgr:CatastropheReinsuranceMember2022-01-012022-12-310001363829esgr:WorkersCompensation15CommutationsMemberesgr:RunOffSegmentMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:GeneralCasualty18CommutationsMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:MarineAviationAndTransit4CommutationsMember2021-01-012021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineTenCommutationsMember2020-01-012020-12-310001363829esgr:AsbestosExposureMemberesgr:RunOffSegmentMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:ProfessionalIndemnityDirectorsOfficersMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:MotorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:EnvironmentalMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:MarineAviationAndTransitInsuranceProductLineMember2022-12-310001363829esgr:ConstructionDefectInsuranceProductLineMemberesgr:RunOffSegmentMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:PropertyInsuranceProductLineMember2022-12-310001363829us-gaap:OtherShortdurationInsuranceProductLineMemberesgr:RunOffSegmentMember2022-12-310001363829esgr:RunOffSegmentMember2022-12-310001363829esgr:LegacyUnderwritingSegmentMember2022-12-310001363829esgr:LegacyUnderwritingSegmentMember2021-01-012021-01-010001363829esgr:RunOffSegmentMember2021-01-012021-01-010001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2013-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2014-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2015-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-31esgr:claim0001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:AsbestosExposureMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2013-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2014-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2015-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2013-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2014-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2014-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2013-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2014-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2014-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2015-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2016-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2014-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2014-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2014-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312014Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2015-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2015-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberus-gaap:ShortDurationInsuranceContractAccidentYear2022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2021Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortDurationInsuranceContractAccidentYear2022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312020Memberesgr:RunOffSegmentMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortDurationInsuranceContractAccidentYear2022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberus-gaap:ShortDurationInsuranceContractAccidentYear2022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312021Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Memberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312022Memberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312012AndPriorMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredAndContractsInceptingInTheYearEndedDecember312012AndPriorMemberesgr:GeneralCasualtyInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2013-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2014-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2015-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2013-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2014-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2015-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2014-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2015-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2016-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2017-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2018-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2019-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2013-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2014-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2015-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312013Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2015-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2015-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2015-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2016-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2017-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2018-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2019-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2015-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2015-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312015Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Member2016-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Member2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312016Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Member2017-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312017Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2018-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2019-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMemberus-gaap:ShortDurationInsuranceContractAccidentYear2019Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Memberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2018-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312018Memberesgr:WorkersCompensationInsuranceProductLineMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberesgr:ShortDurationInsuranceContractsAccidentYear2012AndPriorMember2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2013Member2022-01-012022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Member2022-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Member2019-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Member2020-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Member2021-12-310001363829us-gaap:ShortdurationInsuranceContractsAccidentYear2014Memberesgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-01-012022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310001363829esgr:RunOffSegmentMemberesgr:WorkersCompensationInsuranceProductLineMemberesgr:BusinessAcquiredandContractsInceptingintheYearEndedDecember312019Memberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-01-012022-12-31