3.26.1 html 323 295 1 true 82 0 false 6 false false R1.htm 0000001 - Document - Cover Page Sheet http://www.universalinsuranceholdings.com/role/CoverPage Cover Page Cover 1 false false R2.htm 9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS Sheet http://www.universalinsuranceholdings.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS CONDENSED CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.universalinsuranceholdings.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) Sheet http://www.universalinsuranceholdings.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFINCOMEunaudited CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) Statements 4 false false R5.htm 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) Sheet http://www.universalinsuranceholdings.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEunaudited CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) Statements 5 false false R6.htm 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) Sheet http://www.universalinsuranceholdings.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYunaudited CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) Statements 6 false false R7.htm 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) (Parenthetical) Sheet http://www.universalinsuranceholdings.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYunauditedParenthetical CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) (Parenthetical) Statements 7 false false R8.htm 9952157 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) Sheet http://www.universalinsuranceholdings.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSunaudited CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) Statements 8 false false R9.htm 9952158 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (Parenthetical) Sheet http://www.universalinsuranceholdings.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSunauditedParenthetical CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (Parenthetical) Statements 9 false false R10.htm 9952159 - Disclosure - NATURE OF OPERATIONS AND BASIS OF PRESENTATION Sheet http://www.universalinsuranceholdings.com/role/NATUREOFOPERATIONSANDBASISOFPRESENTATION NATURE OF OPERATIONS AND BASIS OF PRESENTATION Notes 10 false false R11.htm 9952160 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES Sheet http://www.universalinsuranceholdings.com/role/SIGNIFICANTACCOUNTINGPOLICIES SIGNIFICANT ACCOUNTING POLICIES Notes 11 false false R12.htm 9952161 - Disclosure - INVESTMENTS Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTS INVESTMENTS Notes 12 false false R13.htm 9952162 - Disclosure - REINSURANCE Sheet http://www.universalinsuranceholdings.com/role/REINSURANCE REINSURANCE Notes 13 false false R14.htm 9952163 - Disclosure - INSURANCE OPERATIONS Sheet http://www.universalinsuranceholdings.com/role/INSURANCEOPERATIONS INSURANCE OPERATIONS Notes 14 false false R15.htm 9952164 - Disclosure - LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSES Sheet http://www.universalinsuranceholdings.com/role/LIABILITYFORUNPAIDLOSSESANDLOSSADJUSTMENTEXPENSES LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSES Notes 15 false false R16.htm 9952165 - Disclosure - DEBT Sheet http://www.universalinsuranceholdings.com/role/DEBT DEBT Notes 16 false false R17.htm 9952166 - Disclosure - STOCKHOLDERS’ EQUITY Sheet http://www.universalinsuranceholdings.com/role/STOCKHOLDERSEQUITY STOCKHOLDERS’ EQUITY Notes 17 false false R18.htm 9952167 - Disclosure - INCOME TAXES Sheet http://www.universalinsuranceholdings.com/role/INCOMETAXES INCOME TAXES Notes 18 false false R19.htm 9952168 - Disclosure - EARNINGS (LOSS) PER SHARE Sheet http://www.universalinsuranceholdings.com/role/EARNINGSLOSSPERSHARE EARNINGS (LOSS) PER SHARE Notes 19 false false R20.htm 9952169 - Disclosure - OTHER COMPREHENSIVE INCOME (LOSS) Sheet http://www.universalinsuranceholdings.com/role/OTHERCOMPREHENSIVEINCOMELOSS OTHER COMPREHENSIVE INCOME (LOSS) Notes 20 false false R21.htm 9952170 - Disclosure - COMMITMENTS AND CONTINGENCIES Sheet http://www.universalinsuranceholdings.com/role/COMMITMENTSANDCONTINGENCIES COMMITMENTS AND CONTINGENCIES Notes 21 false false R22.htm 9952171 - Disclosure - FAIR VALUE MEASUREMENTS Sheet http://www.universalinsuranceholdings.com/role/FAIRVALUEMEASUREMENTS FAIR VALUE MEASUREMENTS Notes 22 false false R23.htm 9952172 - Disclosure - VARIABLE INTEREST ENTITIES Sheet http://www.universalinsuranceholdings.com/role/VARIABLEINTERESTENTITIES VARIABLE INTEREST ENTITIES Notes 23 false false R24.htm 9952173 - Disclosure - SEGMENT INFORMATION Sheet http://www.universalinsuranceholdings.com/role/SEGMENTINFORMATION SEGMENT INFORMATION Notes 24 false false R25.htm 9952174 - Disclosure - SUBSEQUENT EVENTS Sheet http://www.universalinsuranceholdings.com/role/SUBSEQUENTEVENTS SUBSEQUENT EVENTS Notes 25 false false R26.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 26 false false R27.htm 9955511 - Disclosure - NATURE OF OPERATIONS AND BASIS OF PRESENTATION (Policies) Sheet http://www.universalinsuranceholdings.com/role/NATUREOFOPERATIONSANDBASISOFPRESENTATIONPolicies NATURE OF OPERATIONS AND BASIS OF PRESENTATION (Policies) Policies 27 false false R28.htm 9955512 - Disclosure - INVESTMENTS (Tables) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSTables INVESTMENTS (Tables) Tables http://www.universalinsuranceholdings.com/role/INVESTMENTS 28 false false R29.htm 9955513 - Disclosure - REINSURANCE (Tables) Sheet http://www.universalinsuranceholdings.com/role/REINSURANCETables REINSURANCE (Tables) Tables http://www.universalinsuranceholdings.com/role/REINSURANCE 29 false false R30.htm 9955514 - Disclosure - INSURANCE OPERATIONS (Tables) Sheet http://www.universalinsuranceholdings.com/role/INSURANCEOPERATIONSTables INSURANCE OPERATIONS (Tables) Tables http://www.universalinsuranceholdings.com/role/INSURANCEOPERATIONS 30 false false R31.htm 9955515 - Disclosure - LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSES (Tables) Sheet http://www.universalinsuranceholdings.com/role/LIABILITYFORUNPAIDLOSSESANDLOSSADJUSTMENTEXPENSESTables LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSES (Tables) Tables http://www.universalinsuranceholdings.com/role/LIABILITYFORUNPAIDLOSSESANDLOSSADJUSTMENTEXPENSES 31 false false R32.htm 9955516 - Disclosure - DEBT (Tables) Sheet http://www.universalinsuranceholdings.com/role/DEBTTables DEBT (Tables) Tables http://www.universalinsuranceholdings.com/role/DEBT 32 false false R33.htm 9955517 - Disclosure - STOCKHOLDERS’ EQUITY (Tables) Sheet http://www.universalinsuranceholdings.com/role/STOCKHOLDERSEQUITYTables STOCKHOLDERS’ EQUITY (Tables) Tables http://www.universalinsuranceholdings.com/role/STOCKHOLDERSEQUITY 33 false false R34.htm 9955518 - Disclosure - INCOME TAXES (Tables) Sheet http://www.universalinsuranceholdings.com/role/INCOMETAXESTables INCOME TAXES (Tables) Tables http://www.universalinsuranceholdings.com/role/INCOMETAXES 34 false false R35.htm 9955519 - Disclosure - EARNINGS (LOSS) PER SHARE (Tables) Sheet http://www.universalinsuranceholdings.com/role/EARNINGSLOSSPERSHARETables EARNINGS (LOSS) PER SHARE (Tables) Tables http://www.universalinsuranceholdings.com/role/EARNINGSLOSSPERSHARE 35 false false R36.htm 9955520 - Disclosure - OTHER COMPREHENSIVE INCOME (LOSS) (Tables) Sheet http://www.universalinsuranceholdings.com/role/OTHERCOMPREHENSIVEINCOMELOSSTables OTHER COMPREHENSIVE INCOME (LOSS) (Tables) Tables http://www.universalinsuranceholdings.com/role/OTHERCOMPREHENSIVEINCOMELOSS 36 false false R37.htm 9955521 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) Sheet http://www.universalinsuranceholdings.com/role/FAIRVALUEMEASUREMENTSTables FAIR VALUE MEASUREMENTS (Tables) Tables http://www.universalinsuranceholdings.com/role/FAIRVALUEMEASUREMENTS 37 false false R38.htm 9955522 - Disclosure - VARIABLE INTEREST ENTITIES (Tables) Sheet http://www.universalinsuranceholdings.com/role/VARIABLEINTERESTENTITIESTables VARIABLE INTEREST ENTITIES (Tables) Tables http://www.universalinsuranceholdings.com/role/VARIABLEINTERESTENTITIES 38 false false R39.htm 9955523 - Disclosure - NATURE OF OPERATIONS AND BASIS OF PRESENTATION (Details) Sheet http://www.universalinsuranceholdings.com/role/NATUREOFOPERATIONSANDBASISOFPRESENTATIONDetails NATURE OF OPERATIONS AND BASIS OF PRESENTATION (Details) Details http://www.universalinsuranceholdings.com/role/NATUREOFOPERATIONSANDBASISOFPRESENTATIONPolicies 39 false false R40.htm 9955524 - Disclosure - INVESTMENTS - Schedule of Cost or Amortized Cost and Fair Value of Securities Available for Sale (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofCostorAmortizedCostandFairValueofSecuritiesAvailableforSaleDetails INVESTMENTS - Schedule of Cost or Amortized Cost and Fair Value of Securities Available for Sale (Details) Details 40 false false R41.htm 9955525 - Disclosure - INVESTMENTS - Schedule of Credit Quality of Investment Securities With Contractual Maturities or The Issuer of Such Securities (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofCreditQualityofInvestmentSecuritiesWithContractualMaturitiesorTheIssuerofSuchSecuritiesDetails INVESTMENTS - Schedule of Credit Quality of Investment Securities With Contractual Maturities or The Issuer of Such Securities (Details) Details 41 false false R42.htm 9955526 - Disclosure - INVESTMENTS - Schedule of Amortized Cost and Fair Value on Mortgage-Backed and Asset-Backed Securities (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofAmortizedCostandFairValueonMortgageBackedandAssetBackedSecuritiesDetails INVESTMENTS - Schedule of Amortized Cost and Fair Value on Mortgage-Backed and Asset-Backed Securities (Details) Details 42 false false R43.htm 9955527 - Disclosure - INVESTMENTS - Schedule of Summarized Fair Value and Gross Unrealized Losses on Securities Available for Sale (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofSummarizedFairValueandGrossUnrealizedLossesonSecuritiesAvailableforSaleDetails INVESTMENTS - Schedule of Summarized Fair Value and Gross Unrealized Losses on Securities Available for Sale (Details) Details 43 false false R44.htm 9955528 - Disclosure - INVESTMENTS - Schedule of AFS Allowance for Credit Losses (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofAFSAllowanceforCreditLossesDetails INVESTMENTS - Schedule of AFS Allowance for Credit Losses (Details) Details 44 false false R45.htm 9955529 - Disclosure - INVESTMENTS - Schedule of Amortized Cost and Fair Value of Investments With Contractual Maturities (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofAmortizedCostandFairValueofInvestmentsWithContractualMaturitiesDetails INVESTMENTS - Schedule of Amortized Cost and Fair Value of Investments With Contractual Maturities (Details) Details 45 false false R46.htm 9955530 - Disclosure - INVESTMENTS - Schedule of Securities Available for Sale (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofSecuritiesAvailableforSaleDetails INVESTMENTS - Schedule of Securities Available for Sale (Details) Details 46 false false R47.htm 9955531 - Disclosure - INVESTMENTS - Schedule of Investment Income Comprised Primarily of Interest and Dividends (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofInvestmentIncomeComprisedPrimarilyofInterestandDividendsDetails INVESTMENTS - Schedule of Investment Income Comprised Primarily of Interest and Dividends (Details) Details 47 false false R48.htm 9955532 - Disclosure - INVESTMENTS - Schedule of Details on Unrealized Gains and Losses Related to Equity Securities (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofDetailsonUnrealizedGainsandLossesRelatedtoEquitySecuritiesDetails INVESTMENTS - Schedule of Details on Unrealized Gains and Losses Related to Equity Securities (Details) Details 48 false false R49.htm 9955533 - Disclosure - INVESTMENTS - Schedule of Real Estate Investment (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofRealEstateInvestmentDetails INVESTMENTS - Schedule of Real Estate Investment (Details) Details 49 false false R50.htm 9955534 - Disclosure - INVESTMENTS - Schedule of Depreciation Expense Related to Investment Real Estate (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofDepreciationExpenseRelatedtoInvestmentRealEstateDetails INVESTMENTS - Schedule of Depreciation Expense Related to Investment Real Estate (Details) Details 50 false false R51.htm 9955535 - Disclosure - INVESTMENTS - Narrative (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSNarrativeDetails INVESTMENTS - Narrative (Details) Details 51 false false R52.htm 9955536 - Disclosure - INVESTMENTS - Schedule of The Fair Value of the Other Investments Reported at Net Asset Value (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofTheFairValueoftheOtherInvestmentsReportedatNetAssetValueDetails INVESTMENTS - Schedule of The Fair Value of the Other Investments Reported at Net Asset Value (Details) Details 52 false false R53.htm 9955537 - Disclosure - INVESTMENTS - Schedule of Unrealized Gains (Losses) Recognized on Investment in Private Equity Limited Partnership Still Held (Details) Sheet http://www.universalinsuranceholdings.com/role/INVESTMENTSScheduleofUnrealizedGainsLossesRecognizedonInvestmentinPrivateEquityLimitedPartnershipStillHeldDetails INVESTMENTS - Schedule of Unrealized Gains (Losses) Recognized on Investment in Private Equity Limited Partnership Still Held (Details) Details 53 false false R54.htm 9955538 - Disclosure - REINSURANCE - Schedule of Ratings from Rating Agencies and Unsecured Amounts Due from Reinsurers Exceeded 3% of Stockholders' Equity (Details) Sheet http://www.universalinsuranceholdings.com/role/REINSURANCEScheduleofRatingsfromRatingAgenciesandUnsecuredAmountsDuefromReinsurersExceeded3ofStockholdersEquityDetails REINSURANCE - Schedule of Ratings from Rating Agencies and Unsecured Amounts Due from Reinsurers Exceeded 3% of Stockholders' Equity (Details) Details 54 false false R55.htm 9955539 - Disclosure - REINSURANCE - Schedule of Effects of Reinsurance Arrangements (Details) Sheet http://www.universalinsuranceholdings.com/role/REINSURANCEScheduleofEffectsofReinsuranceArrangementsDetails REINSURANCE - Schedule of Effects of Reinsurance Arrangements (Details) Details 55 false false R56.htm 9955540 - Disclosure - REINSURANCE - Schedule of Prepaid Reinsurance Premiums and Reinsurance Recoverable and Receivable (Details) Sheet http://www.universalinsuranceholdings.com/role/REINSURANCEScheduleofPrepaidReinsurancePremiumsandReinsuranceRecoverableandReceivableDetails REINSURANCE - Schedule of Prepaid Reinsurance Premiums and Reinsurance Recoverable and Receivable (Details) Details 56 false false R57.htm 9955541 - Disclosure - INSURANCE OPERATIONS - Schedule of Beginning and Ending Balances and Changes in DPAC, Net of DRCC (Details) Sheet http://www.universalinsuranceholdings.com/role/INSURANCEOPERATIONSScheduleofBeginningandEndingBalancesandChangesinDPACNetofDRCCDetails INSURANCE OPERATIONS - Schedule of Beginning and Ending Balances and Changes in DPAC, Net of DRCC (Details) Details 57 false false R58.htm 9955542 - Disclosure - INSURANCE OPERATIONS - Narrative (Details) Sheet http://www.universalinsuranceholdings.com/role/INSURANCEOPERATIONSNarrativeDetails INSURANCE OPERATIONS - Narrative (Details) Details 58 false false R59.htm 9955543 - Disclosure - INSURANCE OPERATIONS - Schedule of Statutory Capital and Surplus, and an Amount Representing Ten Percent of Total Liabilities for both UPCIC and APPCIC (Details) Sheet http://www.universalinsuranceholdings.com/role/INSURANCEOPERATIONSScheduleofStatutoryCapitalandSurplusandanAmountRepresentingTenPercentofTotalLiabilitiesforbothUPCICandAPPCICDetails INSURANCE OPERATIONS - Schedule of Statutory Capital and Surplus, and an Amount Representing Ten Percent of Total Liabilities for both UPCIC and APPCIC (Details) Details 59 false false R60.htm 9955544 - Disclosure - INSURANCE OPERATIONS - Schedule of Combined Net Income (Loss) for UPCIC and APPCIC (Details) Sheet http://www.universalinsuranceholdings.com/role/INSURANCEOPERATIONSScheduleofCombinedNetIncomeLossforUPCICandAPPCICDetails INSURANCE OPERATIONS - Schedule of Combined Net Income (Loss) for UPCIC and APPCIC (Details) Details 60 false false R61.htm 9955545 - Disclosure - INSURANCE OPERATIONS - Schedule of Assets Held by Insurance Regulators (Details) Sheet http://www.universalinsuranceholdings.com/role/INSURANCEOPERATIONSScheduleofAssetsHeldbyInsuranceRegulatorsDetails INSURANCE OPERATIONS - Schedule of Assets Held by Insurance Regulators (Details) Details 61 false false R62.htm 9955546 - Disclosure - LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSES - Schedule of Change in Liability for Unpaid Losses and LAE (Details) Sheet http://www.universalinsuranceholdings.com/role/LIABILITYFORUNPAIDLOSSESANDLOSSADJUSTMENTEXPENSESScheduleofChangeinLiabilityforUnpaidLossesandLAEDetails LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSES - Schedule of Change in Liability for Unpaid Losses and LAE (Details) Details 62 false false R63.htm 9955547 - Disclosure - LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSES - Narrative (Details) Sheet http://www.universalinsuranceholdings.com/role/LIABILITYFORUNPAIDLOSSESANDLOSSADJUSTMENTEXPENSESNarrativeDetails LIABILITY FOR UNPAID LOSSES AND LOSS ADJUSTMENT EXPENSES - Narrative (Details) Details http://www.universalinsuranceholdings.com/role/LIABILITYFORUNPAIDLOSSESANDLOSSADJUSTMENTEXPENSESTables 63 false false R64.htm 9955548 - Disclosure - DEBT - Schedule of Long-Term Debt (Details) Sheet http://www.universalinsuranceholdings.com/role/DEBTScheduleofLongTermDebtDetails DEBT - Schedule of Long-Term Debt (Details) Details 64 false false R65.htm 9955549 - Disclosure - DEBT - Narrative (Details) Sheet http://www.universalinsuranceholdings.com/role/DEBTNarrativeDetails DEBT - Narrative (Details) Details 65 false false R66.htm 9955550 - Disclosure - DEBT - Schedule of Interest Expense (Details) Sheet http://www.universalinsuranceholdings.com/role/DEBTScheduleofInterestExpenseDetails DEBT - Schedule of Interest Expense (Details) Details 66 false false R67.htm 9955551 - Disclosure - STOCKHOLDERS’ EQUITY (Details) Sheet http://www.universalinsuranceholdings.com/role/STOCKHOLDERSEQUITYDetails STOCKHOLDERS’ EQUITY (Details) Details http://www.universalinsuranceholdings.com/role/STOCKHOLDERSEQUITYTables 67 false false R68.htm 9955552 - Disclosure - INCOME TAXES - Narrative (Details) Sheet http://www.universalinsuranceholdings.com/role/INCOMETAXESNarrativeDetails INCOME TAXES - Narrative (Details) Details 68 false false R69.htm 9955553 - Disclosure - INCOME TAXES - Schedule of Reconciles Statutory Federal Income Tax Rate to Company' s Effective Tax Rate (Details) Sheet http://www.universalinsuranceholdings.com/role/INCOMETAXESScheduleofReconcilesStatutoryFederalIncomeTaxRatetoCompanysEffectiveTaxRateDetails INCOME TAXES - Schedule of Reconciles Statutory Federal Income Tax Rate to Company' s Effective Tax Rate (Details) Details 69 false false R70.htm 9955554 - Disclosure - EARNINGS (LOSS) PER SHARE (Details) Sheet http://www.universalinsuranceholdings.com/role/EARNINGSLOSSPERSHAREDetails EARNINGS (LOSS) PER SHARE (Details) Details http://www.universalinsuranceholdings.com/role/EARNINGSLOSSPERSHARETables 70 false false R71.htm 9955555 - Disclosure - OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Components of Other Comprehensive Income (loss) Pre-Tax and After-Tax (Details) Sheet http://www.universalinsuranceholdings.com/role/OTHERCOMPREHENSIVEINCOMELOSSScheduleofComponentsofOtherComprehensiveIncomelossPreTaxandAfterTaxDetails OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Components of Other Comprehensive Income (loss) Pre-Tax and After-Tax (Details) Details http://www.universalinsuranceholdings.com/role/OTHERCOMPREHENSIVEINCOMELOSSTables 71 false false R72.htm 9955556 - Disclosure - OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) Sheet http://www.universalinsuranceholdings.com/role/OTHERCOMPREHENSIVEINCOMELOSSScheduleofReclassificationsOutofAccumulatedOtherComprehensiveIncomeLossDetails OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) Details http://www.universalinsuranceholdings.com/role/OTHERCOMPREHENSIVEINCOMELOSSTables 72 false false R73.htm 9955557 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) Sheet http://www.universalinsuranceholdings.com/role/COMMITMENTSANDCONTINGENCIESDetails COMMITMENTS AND CONTINGENCIES (Details) Details http://www.universalinsuranceholdings.com/role/COMMITMENTSANDCONTINGENCIES 73 false false R74.htm 9955558 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Assets Measured for at Fair Value on Recurring Basis (Details) Sheet http://www.universalinsuranceholdings.com/role/FAIRVALUEMEASUREMENTSScheduleofAssetsMeasuredforatFairValueonRecurringBasisDetails FAIR VALUE MEASUREMENTS - Schedule of Assets Measured for at Fair Value on Recurring Basis (Details) Details 74 false false R75.htm 9955559 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Carrying Value and Estimated Fair Values of Financial Instruments not Carried at Fair Value (Details) Sheet http://www.universalinsuranceholdings.com/role/FAIRVALUEMEASUREMENTSScheduleofCarryingValueandEstimatedFairValuesofFinancialInstrumentsnotCarriedatFairValueDetails FAIR VALUE MEASUREMENTS - Schedule of Carrying Value and Estimated Fair Values of Financial Instruments not Carried at Fair Value (Details) Details 75 false false R76.htm 9955560 - Disclosure - VARIABLE INTEREST ENTITIES - Summary of Balance Sheet Classification and Exposure of Restricted Cash Held in a Reinsurance Trust Account (Details) Sheet http://www.universalinsuranceholdings.com/role/VARIABLEINTERESTENTITIESSummaryofBalanceSheetClassificationandExposureofRestrictedCashHeldinaReinsuranceTrustAccountDetails VARIABLE INTEREST ENTITIES - Summary of Balance Sheet Classification and Exposure of Restricted Cash Held in a Reinsurance Trust Account (Details) Details 76 false false R77.htm 9955561 - Disclosure - SEGMENT INFORMATION (Details) Sheet http://www.universalinsuranceholdings.com/role/SEGMENTINFORMATIONDetails SEGMENT INFORMATION (Details) Details http://www.universalinsuranceholdings.com/role/SEGMENTINFORMATION 77 false false R78.htm 9955562 - Disclosure - SUBSEQUENT EVENTS (Details) Sheet http://www.universalinsuranceholdings.com/role/SUBSEQUENTEVENTSDetails SUBSEQUENT EVENTS (Details) Details http://www.universalinsuranceholdings.com/role/SUBSEQUENTEVENTS 78 false false All Reports Book All Reports uve-20260630.htm uve-20260630.xsd uve-20260630_cal.xml uve-20260630_def.xml uve-20260630_lab.xml uve-20260630_pre.xml uve-20260630_g1.jpg http://fasb.org/srt/2026 http://fasb.org/us-gaap/2026 http://xbrl.sec.gov/dei/2026 http://xbrl.sec.gov/ecd/2026 true true