3.26.1 html 524 353 1 false 120 0 false 11 false false R1.htm 0000001 - Document - COVER Sheet http://www.everestre.com/role/COVER COVER Cover 1 false false R2.htm 9952151 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.everestre.com/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.everestre.com/role/CONSOLIDATEDBALANCESHEETSParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Sheet http://www.everestre.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOMELOSS CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Statements 4 false false R5.htm 9952154 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER’S EQUITY Sheet http://www.everestre.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER’S EQUITY Statements 5 false false R6.htm 9952155 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.everestre.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 6 false false R7.htm 9952156 - Disclosure - GENERAL Sheet http://www.everestre.com/role/GENERAL GENERAL Notes 7 false false R8.htm 9952157 - Disclosure - BASIS OF PRESENTATION Sheet http://www.everestre.com/role/BASISOFPRESENTATION BASIS OF PRESENTATION Notes 8 false false R9.htm 9952158 - Disclosure - INVESTMENTS Sheet http://www.everestre.com/role/INVESTMENTS INVESTMENTS Notes 9 false false R10.htm 9952159 - Disclosure - FAIR VALUE Sheet http://www.everestre.com/role/FAIRVALUE FAIR VALUE Notes 10 false false R11.htm 9952160 - Disclosure - RESERVE FOR LOSSES AND LAE Sheet http://www.everestre.com/role/RESERVEFORLOSSESANDLAE RESERVE FOR LOSSES AND LAE Notes 11 false false R12.htm 9952161 - Disclosure - SALE OF RENEWAL RIGHTS Sheet http://www.everestre.com/role/SALEOFRENEWALRIGHTS SALE OF RENEWAL RIGHTS Notes 12 false false R13.htm 9952162 - Disclosure - SEGMENT REPORTING Sheet http://www.everestre.com/role/SEGMENTREPORTING SEGMENT REPORTING Notes 13 false false R14.htm 9952163 - Disclosure - SENIOR NOTES Notes http://www.everestre.com/role/SENIORNOTES SENIOR NOTES Notes 14 false false R15.htm 9952164 - Disclosure - LONG-TERM SUBORDINATED NOTES Notes http://www.everestre.com/role/LONGTERMSUBORDINATEDNOTES LONG-TERM SUBORDINATED NOTES Notes 15 false false R16.htm 9952165 - Disclosure - FEDERAL HOME LOAN BANK MEMBERSHIP Sheet http://www.everestre.com/role/FEDERALHOMELOANBANKMEMBERSHIP FEDERAL HOME LOAN BANK MEMBERSHIP Notes 16 false false R17.htm 9952166 - Disclosure - COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS Sheet http://www.everestre.com/role/COLLATERALIZEDREINSURANCETRUSTAGREEMENTSANDOTHERRESTRICTEDASSETS COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS Notes 17 false false R18.htm 9952167 - Disclosure - COMMITMENTS AND CONTINGENCIES Sheet http://www.everestre.com/role/COMMITMENTSANDCONTINGENCIES COMMITMENTS AND CONTINGENCIES Notes 18 false false R19.htm 9952168 - Disclosure - OTHER COMPREHENSIVE INCOME (LOSS) Sheet http://www.everestre.com/role/OTHERCOMPREHENSIVEINCOMELOSS OTHER COMPREHENSIVE INCOME (LOSS) Notes 19 false false R20.htm 9952169 - Disclosure - RELATED-PARTY TRANSACTIONS Sheet http://www.everestre.com/role/RELATEDPARTYTRANSACTIONS RELATED-PARTY TRANSACTIONS Notes 20 false false R21.htm 9952170 - Disclosure - INCOME TAXES Sheet http://www.everestre.com/role/INCOMETAXES INCOME TAXES Notes 21 false false R22.htm 9952171 - Disclosure - SUBSEQUENT EVENTS Sheet http://www.everestre.com/role/SUBSEQUENTEVENTS SUBSEQUENT EVENTS Notes 22 false false R23.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 23 false false R24.htm 9955511 - Disclosure - BASIS OF PRESENTATION (Policies) Sheet http://www.everestre.com/role/BASISOFPRESENTATIONPolicies BASIS OF PRESENTATION (Policies) Policies 24 false false R25.htm 9955512 - Disclosure - INVESTMENTS (Tables) Sheet http://www.everestre.com/role/INVESTMENTSTables INVESTMENTS (Tables) Tables http://www.everestre.com/role/INVESTMENTS 25 false false R26.htm 9955513 - Disclosure - FAIR VALUE (Tables) Sheet http://www.everestre.com/role/FAIRVALUETables FAIR VALUE (Tables) Tables http://www.everestre.com/role/FAIRVALUE 26 false false R27.htm 9955514 - Disclosure - RESERVE FOR LOSSES AND LAE (Tables) Sheet http://www.everestre.com/role/RESERVEFORLOSSESANDLAETables RESERVE FOR LOSSES AND LAE (Tables) Tables http://www.everestre.com/role/RESERVEFORLOSSESANDLAE 27 false false R28.htm 9955515 - Disclosure - SEGMENT REPORTING (Tables) Sheet http://www.everestre.com/role/SEGMENTREPORTINGTables SEGMENT REPORTING (Tables) Tables http://www.everestre.com/role/SEGMENTREPORTING 28 false false R29.htm 9955516 - Disclosure - SENIOR NOTES (Tables) Notes http://www.everestre.com/role/SENIORNOTESTables SENIOR NOTES (Tables) Tables http://www.everestre.com/role/SENIORNOTES 29 false false R30.htm 9955517 - Disclosure - LONG-TERM SUBORDINATED NOTES (Tables) Notes http://www.everestre.com/role/LONGTERMSUBORDINATEDNOTESTables LONG-TERM SUBORDINATED NOTES (Tables) Tables http://www.everestre.com/role/LONGTERMSUBORDINATEDNOTES 30 false false R31.htm 9955518 - Disclosure - COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS (Tables) Sheet http://www.everestre.com/role/COLLATERALIZEDREINSURANCETRUSTAGREEMENTSANDOTHERRESTRICTEDASSETSTables COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS (Tables) Tables http://www.everestre.com/role/COLLATERALIZEDREINSURANCETRUSTAGREEMENTSANDOTHERRESTRICTEDASSETS 31 false false R32.htm 9955519 - Disclosure - OTHER COMPREHENSIVE INCOME (LOSS) (Tables) Sheet http://www.everestre.com/role/OTHERCOMPREHENSIVEINCOMELOSSTables OTHER COMPREHENSIVE INCOME (LOSS) (Tables) Tables http://www.everestre.com/role/OTHERCOMPREHENSIVEINCOMELOSS 32 false false R33.htm 9955520 - Disclosure - RELATED-PARTY TRANSACTIONS (Tables) Sheet http://www.everestre.com/role/RELATEDPARTYTRANSACTIONSTables RELATED-PARTY TRANSACTIONS (Tables) Tables http://www.everestre.com/role/RELATEDPARTYTRANSACTIONS 33 false false R34.htm 9955521 - Disclosure - INVESTMENTS - Schedule of Amortized Cost, Allowance for Credit Losses, Gross Unrealized Appreciation/(Depreciation) and Fair Value of Fixed Maturity Securities (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofAmortizedCostAllowanceforCreditLossesGrossUnrealizedAppreciationDepreciationandFairValueofFixedMaturitySecuritiesDetails INVESTMENTS - Schedule of Amortized Cost, Allowance for Credit Losses, Gross Unrealized Appreciation/(Depreciation) and Fair Value of Fixed Maturity Securities (Details) Details 34 false false R35.htm 9955522 - Disclosure - INVESTMENTS - Schedule of Amortized Cost and Fair Value of Fixed Maturity Securities, by Contractual Maturity (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofAmortizedCostandFairValueofFixedMaturitySecuritiesbyContractualMaturityDetails INVESTMENTS - Schedule of Amortized Cost and Fair Value of Fixed Maturity Securities, by Contractual Maturity (Details) Details 35 false false R36.htm 9955523 - Disclosure - INVESTMENTS - Schedule of Changes in Net Unrealized Appreciation (Depreciation) for Investments (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofChangesinNetUnrealizedAppreciationDepreciationforInvestmentsDetails INVESTMENTS - Schedule of Changes in Net Unrealized Appreciation (Depreciation) for Investments (Details) Details 36 false false R37.htm 9955524 - Disclosure - INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities - Available for Sale, by Security Type (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofAggregateFairValueandGrossUnrealizedDepreciationofFixedMaturitySecuritiesAvailableforSalebySecurityTypeDetails INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities - Available for Sale, by Security Type (Details) Details 37 false false R38.htm 9955525 - Disclosure - INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities - Available for Sale, by Contractual Maturity (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofAggregateFairValueandGrossUnrealizedDepreciationofFixedMaturitySecuritiesAvailableforSalebyContractualMaturityDetails INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities - Available for Sale, by Contractual Maturity (Details) Details 38 false false R39.htm 9955526 - Disclosure - INVESTMENTS - Narrative (Details) Sheet http://www.everestre.com/role/INVESTMENTSNarrativeDetails INVESTMENTS - Narrative (Details) Details 39 false false R40.htm 9955527 - Disclosure - INVESTMENTS - Schedule of Components of Net Investment Income (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofComponentsofNetInvestmentIncomeDetails INVESTMENTS - Schedule of Components of Net Investment Income (Details) Details 40 false false R41.htm 9955528 - Disclosure - INVESTMENTS - Schedule of Components of Net Gains (Losses) on Investments (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofComponentsofNetGainsLossesonInvestmentsDetails INVESTMENTS - Schedule of Components of Net Gains (Losses) on Investments (Details) Details 41 false false R42.htm 9955529 - Disclosure - INVESTMENTS - Schedule of Fixed Maturities, Allowance for Credit Loss, Available-for-Sale Rollforward (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofFixedMaturitiesAllowanceforCreditLossAvailableforSaleRollforwardDetails INVESTMENTS - Schedule of Fixed Maturities, Allowance for Credit Loss, Available-for-Sale Rollforward (Details) Details 42 false false R43.htm 9955530 - Disclosure - INVESTMENTS - Schedule of Fixed Maturities, Allowance for Credit Loss, Held-to-Maturity Rollforward (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofFixedMaturitiesAllowanceforCreditLossHeldtoMaturityRollforwardDetails INVESTMENTS - Schedule of Fixed Maturities, Allowance for Credit Loss, Held-to-Maturity Rollforward (Details) Details 43 false false R44.htm 9955531 - Disclosure - INVESTMENTS - Schedule of Gross Gains (Losses) from Dispositions of Fixed Maturity and Equity Securities (Details) Sheet http://www.everestre.com/role/INVESTMENTSScheduleofGrossGainsLossesfromDispositionsofFixedMaturityandEquitySecuritiesDetails INVESTMENTS - Schedule of Gross Gains (Losses) from Dispositions of Fixed Maturity and Equity Securities (Details) Details 44 false false R45.htm 9955532 - Disclosure - FAIR VALUE - Narrative (Details) Sheet http://www.everestre.com/role/FAIRVALUENarrativeDetails FAIR VALUE - Narrative (Details) Details 45 false false R46.htm 9955533 - Disclosure - FAIR VALUE - Schedule of Fair Value Measurement Levels for all Assets, Recorded at Fair Value (Details) Sheet http://www.everestre.com/role/FAIRVALUEScheduleofFairValueMeasurementLevelsforallAssetsRecordedatFairValueDetails FAIR VALUE - Schedule of Fair Value Measurement Levels for all Assets, Recorded at Fair Value (Details) Details 46 false false R47.htm 9955534 - Disclosure - FAIR VALUE - Schedule of Activity Under Level 3, Fair Value Measurements Using Significant Unobservable Inputs for Fixed Maturities - Available for Sale (Details) Sheet http://www.everestre.com/role/FAIRVALUEScheduleofActivityUnderLevel3FairValueMeasurementsUsingSignificantUnobservableInputsforFixedMaturitiesAvailableforSaleDetails FAIR VALUE - Schedule of Activity Under Level 3, Fair Value Measurements Using Significant Unobservable Inputs for Fixed Maturities - Available for Sale (Details) Details 47 false false R48.htm 9955535 - Disclosure - RESERVE FOR LOSSES AND LAE - Schedule of Activity in the Reserve for Losses and Loss Adjustment Expenses (“LAE”) (Details) Sheet http://www.everestre.com/role/RESERVEFORLOSSESANDLAEScheduleofActivityintheReserveforLossesandLossAdjustmentExpensesLAEDetails RESERVE FOR LOSSES AND LAE - Schedule of Activity in the Reserve for Losses and Loss Adjustment Expenses (“LAE”) (Details) Details 48 false false R49.htm 9955536 - Disclosure - RESERVE FOR LOSSES AND LAE - Narrative (Details) Sheet http://www.everestre.com/role/RESERVEFORLOSSESANDLAENarrativeDetails RESERVE FOR LOSSES AND LAE - Narrative (Details) Details 49 false false R50.htm 9955537 - Disclosure - SALE OF RENEWAL RIGHTS (Details) Sheet http://www.everestre.com/role/SALEOFRENEWALRIGHTSDetails SALE OF RENEWAL RIGHTS (Details) Details http://www.everestre.com/role/SALEOFRENEWALRIGHTS 50 false false R51.htm 9955538 - Disclosure - SEGMENT REPORTING - Narrative (Details) Sheet http://www.everestre.com/role/SEGMENTREPORTINGNarrativeDetails SEGMENT REPORTING - Narrative (Details) Details 51 false false R52.htm 9955539 - Disclosure - SEGMENT REPORTING - Schedule of Underwriting Results for Operating Segments (Details) Sheet http://www.everestre.com/role/SEGMENTREPORTINGScheduleofUnderwritingResultsforOperatingSegmentsDetails SEGMENT REPORTING - Schedule of Underwriting Results for Operating Segments (Details) Details 52 false false R53.htm 9955540 - Disclosure - SENIOR NOTES - Schedule of Outstanding Senior Notes (Details) Notes http://www.everestre.com/role/SENIORNOTESScheduleofOutstandingSeniorNotesDetails SENIOR NOTES - Schedule of Outstanding Senior Notes (Details) Details 53 false false R54.htm 9955541 - Disclosure - SENIOR NOTES - Schedule of Interest Expense Incurred in Connection with Senior Notes (Details) Notes http://www.everestre.com/role/SENIORNOTESScheduleofInterestExpenseIncurredinConnectionwithSeniorNotesDetails SENIOR NOTES - Schedule of Interest Expense Incurred in Connection with Senior Notes (Details) Details 54 false false R55.htm 9955542 - Disclosure - LONG-TERM SUBORDINATED NOTES - Schedule of Outstanding Fixed to Floating Rate Long-Term Subordinated Notes (Details) Notes http://www.everestre.com/role/LONGTERMSUBORDINATEDNOTESScheduleofOutstandingFixedtoFloatingRateLongTermSubordinatedNotesDetails LONG-TERM SUBORDINATED NOTES - Schedule of Outstanding Fixed to Floating Rate Long-Term Subordinated Notes (Details) Details 55 false false R56.htm 9955543 - Disclosure - LONG-TERM SUBORDINATED NOTES - Narrative (Details) Notes http://www.everestre.com/role/LONGTERMSUBORDINATEDNOTESNarrativeDetails LONG-TERM SUBORDINATED NOTES - Narrative (Details) Details 56 false false R57.htm 9955544 - Disclosure - LONG-TERM SUBORDINATED NOTES - Schedule of Interest Expense Incurred in Connection with Long-Term Subordinated Notes (Details) Notes http://www.everestre.com/role/LONGTERMSUBORDINATEDNOTESScheduleofInterestExpenseIncurredinConnectionwithLongTermSubordinatedNotesDetails LONG-TERM SUBORDINATED NOTES - Schedule of Interest Expense Incurred in Connection with Long-Term Subordinated Notes (Details) Details 57 false false R58.htm 9955545 - Disclosure - FEDERAL HOME LOAN BANK MEMBERSHIP (Details) Sheet http://www.everestre.com/role/FEDERALHOMELOANBANKMEMBERSHIPDetails FEDERAL HOME LOAN BANK MEMBERSHIP (Details) Details http://www.everestre.com/role/FEDERALHOMELOANBANKMEMBERSHIP 58 false false R59.htm 9955546 - Disclosure - COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS - Schedule of Restricted Assets (Details) Sheet http://www.everestre.com/role/COLLATERALIZEDREINSURANCETRUSTAGREEMENTSANDOTHERRESTRICTEDASSETSScheduleofRestrictedAssetsDetails COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS - Schedule of Restricted Assets (Details) Details 59 false false R60.htm 9955547 - Disclosure - COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS - Narrative (Details) Sheet http://www.everestre.com/role/COLLATERALIZEDREINSURANCETRUSTAGREEMENTSANDOTHERRESTRICTEDASSETSNarrativeDetails COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS - Narrative (Details) Details http://www.everestre.com/role/COLLATERALIZEDREINSURANCETRUSTAGREEMENTSANDOTHERRESTRICTEDASSETSTables 60 false false R61.htm 9955548 - Disclosure - COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS - Schedule of Collateralized Reinsurance Agreements (Details) Sheet http://www.everestre.com/role/COLLATERALIZEDREINSURANCETRUSTAGREEMENTSANDOTHERRESTRICTEDASSETSScheduleofCollateralizedReinsuranceAgreementsDetails COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS - Schedule of Collateralized Reinsurance Agreements (Details) Details 61 false false R62.htm 9955549 - Disclosure - OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Components of Comprehensive Income (Loss) in the Consolidated Statements of Operations (Details) Sheet http://www.everestre.com/role/OTHERCOMPREHENSIVEINCOMELOSSScheduleofComponentsofComprehensiveIncomeLossintheConsolidatedStatementsofOperationsDetails OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Components of Comprehensive Income (Loss) in the Consolidated Statements of Operations (Details) Details http://www.everestre.com/role/OTHERCOMPREHENSIVEINCOMELOSSTables 62 false false R63.htm 9955550 - Disclosure - OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Reclassification from Accumulated Other Comprehensive Income (Details) Sheet http://www.everestre.com/role/OTHERCOMPREHENSIVEINCOMELOSSScheduleofReclassificationfromAccumulatedOtherComprehensiveIncomeDetails OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Reclassification from Accumulated Other Comprehensive Income (Details) Details http://www.everestre.com/role/OTHERCOMPREHENSIVEINCOMELOSSTables 63 false false R64.htm 9955551 - Disclosure - OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Components of Accumulated Other Comprehensive Income (Loss), Net of Tax, in the Consolidated Balance Sheets (Details) Sheet http://www.everestre.com/role/OTHERCOMPREHENSIVEINCOMELOSSScheduleofComponentsofAccumulatedOtherComprehensiveIncomeLossNetofTaxintheConsolidatedBalanceSheetsDetails OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Components of Accumulated Other Comprehensive Income (Loss), Net of Tax, in the Consolidated Balance Sheets (Details) Details http://www.everestre.com/role/OTHERCOMPREHENSIVEINCOMELOSSTables 64 false false R65.htm 9955552 - Disclosure - RELATED-PARTY TRANSACTIONS - Schedule of Related-Party Long-Term Notes (Details) Notes http://www.everestre.com/role/RELATEDPARTYTRANSACTIONSScheduleofRelatedPartyLongTermNotesDetails RELATED-PARTY TRANSACTIONS - Schedule of Related-Party Long-Term Notes (Details) Details 65 false false R66.htm 9955553 - Disclosure - RELATED-PARTY TRANSACTIONS -Schedule of Related-Party Interest Income (Details) Sheet http://www.everestre.com/role/RELATEDPARTYTRANSACTIONSScheduleofRelatedPartyInterestIncomeDetails RELATED-PARTY TRANSACTIONS -Schedule of Related-Party Interest Income (Details) Details 66 false false R67.htm 9955554 - Disclosure - RELATED-PARTY TRANSACTIONS - Narrative (Details) Sheet http://www.everestre.com/role/RELATEDPARTYTRANSACTIONSNarrativeDetails RELATED-PARTY TRANSACTIONS - Narrative (Details) Details 67 false false R68.htm 9955555 - Disclosure - RELATED-PARTY TRANSACTIONS - Schedule of Dividends Received on Preferred Shares (Details) Sheet http://www.everestre.com/role/RELATEDPARTYTRANSACTIONSScheduleofDividendsReceivedonPreferredSharesDetails RELATED-PARTY TRANSACTIONS - Schedule of Dividends Received on Preferred Shares (Details) Details 68 false false R69.htm 9955556 - Disclosure - RELATED-PARTY TRANSACTIONS - Schedule of Expenses Incurred By Holdings From Services Provided By Affiliated Company (Details) Sheet http://www.everestre.com/role/RELATEDPARTYTRANSACTIONSScheduleofExpensesIncurredByHoldingsFromServicesProvidedByAffiliatedCompanyDetails RELATED-PARTY TRANSACTIONS - Schedule of Expenses Incurred By Holdings From Services Provided By Affiliated Company (Details) Details 69 false false R70.htm 9955557 - Disclosure - RELATED-PARTY TRANSACTIONS - Schedule of Premiums and Losses Ceded by Company Assumed to Affiliate (Details) Sheet http://www.everestre.com/role/RELATEDPARTYTRANSACTIONSScheduleofPremiumsandLossesCededbyCompanyAssumedtoAffiliateDetails RELATED-PARTY TRANSACTIONS - Schedule of Premiums and Losses Ceded by Company Assumed to Affiliate (Details) Details 70 false false R71.htm 9955558 - Disclosure - RELATED-PARTY TRANSACTIONS - Schedule of Premiums and Losses Ceded by Company to Affiliate (Details) Sheet http://www.everestre.com/role/RELATEDPARTYTRANSACTIONSScheduleofPremiumsandLossesCededbyCompanytoAffiliateDetails RELATED-PARTY TRANSACTIONS - Schedule of Premiums and Losses Ceded by Company to Affiliate (Details) Details 71 false false All Reports Book All Reports cik0000914748-20260630.htm cik0000914748-20260630.xsd cik0000914748-20260630_cal.xml cik0000914748-20260630_def.xml cik0000914748-20260630_lab.xml cik0000914748-20260630_pre.xml http://fasb.org/us-gaap/2026 http://xbrl.sec.gov/dei/2026 http://xbrl.sec.gov/ecd/2026 true true