CI


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:BenefitsLossesAndExpenses

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServicesSold
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestPaidNet

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetInvestmentIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet

us-gaap:PremiumsEarnedNet
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:ProfitLoss
us-gaap:ProductOrService
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:Revenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
us-gaap:ConsolidatedEntities

us-gaap:Liabilities
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent
us-gaap:ConsolidatedEntities

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities

us-gaap:ShortTermInvestments
us-gaap:InvestmentType

us-gaap:ReceivablesNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent
us-gaap:ConsolidatedEntities

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AmortizationOfIntangibleAssets
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LongTermInvestments
us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:InvestmentType

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:IntangibleAssetsNetExcludingGoodwill
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:AccountsPayableCurrent

us-gaap:DebtCurrent
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:DebtInstrument
us-gaap:LongTermDebtCurrent

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:ConsolidatedEntities
us-gaap:OtherLiabilitiesCurrent
us-gaap:DebtInstrument
us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtAndCapitalLeaseObligations
us-gaap:ConsolidatedEntities

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock
us-gaap:ConsolidatedEntities

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:ConsolidatedEntities

us-gaap:TreasuryStockValue
us-gaap:ConsolidatedEntities

us-gaap:MinorityInterest

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:ProfitLoss

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

ci:AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ci:ComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestIncludingTemporaryEquity

ci:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPreviouslyRecorded

ci:DebtSecuritiesAvailableForSaleAndCommercialMortgageLoansAllowanceForCreditLossExpenseReversal
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
ci:DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax

ci:EarningsPerShareEffectOfDilution
us-gaap:FairValueByAssetClass
ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossAttributedToInstrumentsHeldIncludedInEarnings
us-gaap:FairValueByAssetClass
ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossRequiredToAdjustFuturePolicyBenefits

ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
ci:FinancingReceivableCreditQualityDebtServiceCoverageBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanToValue
us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
ci:FinancingReceivableCreditQualityDebtServiceCoverageRatio
us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanToValue
us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
ci:FinancingReceivableCreditQualityLoanToValueRatio
us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
ci:FinancingReceivableCreditQualityLoanToValueRatioBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:GainLossOnExtinguishmentOfDebtNetOfTax
us-gaap:ProductOrService, us-gaap:GuaranteedInsuranceContractTypeOfBenefit
ci:GuaranteedMinimumDeathBenefitsTotalContractholders
us-gaap:StatementBusinessSegments
ci:ImpactOfPriorYearDevelopmentOnPretaxIncome
us-gaap:StatementBusinessSegments
ci:ImpactOfPriorYearDevelopmentOnShareholdersNetIncome

ci:ImpairmentsOnInvestmentsTotal

ci:IncomeLossAttributableToNoncontrollingInterestBeforeTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ci:IncreaseDecreaseInAccountsPayableAccruedAndOtherOperatingLiabilities

ci:IncreaseDecreaseInPharmacyAndServiceCostsPayable
us-gaap:NoncatastrophicEvent, us-gaap:StatementBusinessSegments
ci:LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage
us-gaap:StatementBusinessSegments

ci:NonInvestmentRevenue
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

ci:NoncontrollingInterestOtherChanges
us-gaap:StatementEquityComponents

ci:OrganizationalEfficiencyPlanCharges
us-gaap:ConsolidationItems

ci:OrganizationalEfficiencyPlanChargesNetOfTax

ci:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAndDerivativesAdjustmentNetOfTax
us-gaap:StatementEquityComponents
ci:OtherComprehensiveIncomeLossBeforeReclassificationsAfterTaxIncludingTemporaryEquity
us-gaap:StatementEquityComponents
ci:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTaxIncludingTemporaryEquity
us-gaap:StatementEquityComponents
ci:OtherComprehensiveIncomeLossBeforeReclassificationsTaxIncludingTemporaryEquity

ci:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxIncludingTemporaryEquity

ci:OtherComprehensiveIncomeLossNetOfTaxIncludingTemporaryEquity
us-gaap:StatementEquityComponents

ci:PaymentsForDebtTenderAndRedemption

ci:PaymentsForProceedsFromPropertyPlantAndEquipment

ci:PaymentsToAcquireDebtAndEquitySecurities
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
ci:ProceedsFromIssuanceOfLongTermDebtNetOfDiscountsAndUnderwritingFees

ci:ProceedsFromMaturitiesPrepaymentsAndCallsOfDebtAndEquitySecurities

ci:ProceedsFromRepaymentsOfOtherShortTermDebt

ci:ProceedsFromSaleOfDebtAndEquitySecurities

ci:RealizedInvestmentGainLoss

ci:RealizedInvestmentGainLossExcludingImpairments

ci:RealizedInvestmentGainLossIncludingEquityMethodSubsidiaries
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ci:RealizedInvestmentGainsLossesEquityMethodInvestments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ci:SegmentRevenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ci:SpecialItemChargeAfterTaxLitigation

ci:SpecialItemChargeBeforetaxLitigation
us-gaap:ConsolidationItems

ci:SpecialItemChargesDebtExtinguishmentCostsBeforeTax
us-gaap:ConsolidationItems

ci:SpecialItemChargesDebtExtinguishmentCostsNetOfTax

ci:SpecialItemGainLossFromContractAdjustmentBeforeTaxes
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ci:SpecialItemGainLossFromContractAdjustmentNetOfTax

ci:SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentBeforeTaxes
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ci:SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentNetOfTax

ci:SpecialItemGainOrLossBeforeTaxAttributableToReportngEntity

ci:SpecialItemGainOrLossNetOfTaxAttributableToReportngEntity

ci:SpecialItemsIncreaseDecreaseToRevenues
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
ci:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpenseLessInterestAccretion

ci:TemporaryEquityOtherComprehensiveIncome
us-gaap:StatementEquityComponents

ci:TransactionRelatedCosts
us-gaap:ConsolidationItems

ci:TransactionRelatedCostsAfterTax

us-gaap:AdditionsToContractHoldersFunds
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1

us-gaap:CededPremiumsEarned

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
us-gaap:ProductOrService, us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsLiquidationProceeds

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInInsuranceLiabilities

us-gaap:IncreaseDecreaseInReinsuranceRecoverable

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
us-gaap:StatementBusinessSegments
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1
us-gaap:StatementBusinessSegments
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1
us-gaap:StatementBusinessSegments
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

us-gaap:NetIncomeLossAttributableToNonredeemableNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
us-gaap:StatementBusinessSegments
us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireMortgageNotesReceivable

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:ProceedsFromCollectionOfLoansReceivable
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:ProceedsFromDivestitureOfBusinesses

us-gaap:ProceedsFromIssuanceOfCommonStock
us-gaap:LitigationCase, us-gaap:GainContingenciesByNature, us-gaap:LitigationStatus
us-gaap:ProceedsFromLegalSettlements
us-gaap:LitigationCase, us-gaap:LitigationStatus

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument, us-gaap:ShortTermDebtType
us-gaap:RepaymentsOfShortTermDebt
us-gaap:DebtInstrument, us-gaap:ShortTermDebtType
us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsDiscountedLiabilitiesInterestAccretion

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StatementBusinessSegments
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense
us-gaap:NoncatastrophicEvent, us-gaap:StatementBusinessSegments
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
us-gaap:StatementBusinessSegments

us-gaap:TemporaryEquityNetIncome

us-gaap:TemporaryEquityOtherChanges

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfSharesIssuedBasic

us-gaap:WithdrawalFromContractHoldersFunds

ci:AccruedExpensesAndOtherLiabilities

ci:AllowanceForReceivablesClientCredits

ci:AllowanceForReceivablesNetCurrent
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
ci:AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:FairValueByMeasurementFrequency
us-gaap:Range
ci:AssetsMeasuredAtFairValueUnderCertainConditionsPercentOfTotalInvestments

ci:AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments
ci:InvestmentsCreditRating
ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale
ci:InvestmentsCreditRating
ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale
ci:InvestmentsCreditRating
ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale
ci:InvestmentsCreditRating
ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale
ci:InvestmentsCreditRating
ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale
ci:InvestmentsCreditRating
ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments

ci:AvailableForSaleSecuritiesFixedMaturitiesFairValueExcludingTradingHybridBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:BusinessAcquisition
ci:BusinessCombinationRecognizedIdentifiableTangibleAssetsAcquiredAndLiabilitiesAssumedNet
ci:ShortTermInvestmentsAndCashEquivalents
ci:CashCashEquivalentsAndShortTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:CommitmentsToContributeAdditionalEquityAndCapital
us-gaap:InvestmentType

ci:ContractualAllowancesManufacturersReceivablesNetCurrent

ci:ContractualAllowancesThirdPartyPayorsReceivablesNetCurrent
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
ci:CreditFacilityMaximumBorrowingCapacityAdditional

ci:DebtAndEquitySecuritiesClassifiedInLevel2PercentageBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:DebtAndEquitySecuritiesClassifiedInLevel3PercentageBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:DebtSecuritiesAvailableForSaleAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments
ci:InvestmentsCreditRating
ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAmortizedCost
ci:InvestmentsCreditRating, us-gaap:FinancialInstrument

ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionAmortizedCost
ci:InvestmentsCreditRating
ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAmortizedCost
ci:InvestmentsCreditRating, us-gaap:FinancialInstrument
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
ci:DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput

ci:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:DebtSecuritiesAvailableForSaleUnrealizedLossPositionBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:DebtSecuritiesPurchaseCommitment

ci:DeferredTaxLiabilitiesUnrealizedGainsOnInvestmentsAndUnrealizedCurrencyTransactionGains
us-gaap:RetirementPlanType
ci:DefinedBenefitPlanFairValueOfPlanAssetsInvestedInFundsOfferedByUnaffiliatedEntity
us-gaap:RetirementPlanType
ci:DefinedBenefitPlanFairValueOfPlanAssetsInvestedInSeparateAccountsOfSubsidiaries
us-gaap:RetirementPlanType
ci:DefinedBenefitPlanMarketRelatedValueOfPensionPlanAssets
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
ci:DerivativeAssetsBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
ci:DerivativeLiabilitiesBeforeReclassificationToDisposalGroupLiabilitiesHeldForSale
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
ci:DerivativeNotionalAmountBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

ci:DisposalGroupIncludingDiscontinuedOperationCurrentInsuranceAndContractholderLiabilities

ci:DisposalGroupIncludingDiscontinuedOperationCurrentInvestmentsCurrent
us-gaap:DisposalGroupClassification, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
ci:DisposalGroupIncludingDiscontinuedOperationDebtSecuritiesAvailableForSaleFairValue
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupClassification, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
ci:DisposalGroupIncludingDiscontinuedOperationFinancingReceivableAfterAllowanceForCreditLoss

ci:DisposalGroupIncludingDiscontinuedOperationInsuranceAndContractholderLiabilities
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

ci:DisposalGroupIncludingDiscontinuedOperationInvestments
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

ci:DisposalGroupIncludingDiscontinuedOperationInvestmentsCurrent
us-gaap:DisposalGroupClassification
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

ci:DisposalGroupIncludingDiscontinuedOperationNoncurrentInsuranceAndContractholderLiabilities

ci:DisposalGroupIncludingDiscontinuedOperationNoncurrentInvestmentsCurrent

ci:DisposalGroupIncludingDiscontinuedOperationReinsuranceRecoverables

ci:DisposalGroupIncludingDiscontinuedOperationSeparateAccountAssetsCurrent
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
ci:DisposalGroupIncludingDiscontinuedOperationsAccountsReceivableNet
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
ci:DisposalGroupIncludingDiscontinuedOperationsDebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
ci:DisposalGroupIncludingDiscontinuedOperationsDebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:ConsolidatedEntities
ci:DueFromAffiliateNoncurrentNet

ci:EquitySecuritiesFVNIAndWithoutReadilyDeterminableFairValueAndHybridInstrumentsAmortizedCost

ci:EquitySecuritiesFVNIAndWithoutReadilyDeterminableFairValueAndHybridInstrumentsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:EquitySecuritiesFVNIAndWithoutReadilyDeterminableFairValueAndHybridInstrumentsCarryingAmount

ci:EquitySecuritiesFvNiBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

ci:EquitySecuritiesFvNiCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:EquitySecuritiesHybridInstrumentsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:EquitySecuritiesHybridInstrumentsCarryingAmount

ci:EquitySecuritiesHybridInstrumentsCarryingAmountBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:EquitySecuritiesWithoutReadilyDeterminableFairValueAmortizedCost

ci:EquitySecuritiesWithoutReadilyDeterminableFairValueAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:EquitySecuritiesWithoutReadilyDeterminableFairValueAmountBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByAssetClass
ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValueBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
ci:FinancingReceivableAfterAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
ci:FinancingReceivableAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanToValue
ci:FinancingReceivableBeforeAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:FiniteLivedIntangibleAssetsAccumulatedAmortizationIncludingVoba

ci:FiniteLivedIntangibleAssetsAccumulatedAmortizationVoba

ci:FiniteLivedIntangibleAssetsGrossVoba

ci:FiniteLivedIntangibleAssetsNetVoba

ci:GuaranteedSeparateAccountAssets
us-gaap:FairValueByFairValueHierarchyLevel

ci:GuaranteedSeparateAccountAssetsBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByFairValueHierarchyLevel

ci:InsuranceAndContractholderLiabilities

ci:InsuranceAndContractholderLiabilitiesCurrent

ci:InsuranceAndContractholderLiabilitiesCurrentIncludingDisposalGroups

ci:InsuranceAndContractholderLiabilitiesIncludingDisposalGroups

ci:InsuranceAndContractholderLiabilitiesNoncurrent

ci:InsuranceAndContractholderLiabilitiesNoncurrentIncludingDisposalGroups

ci:InsuranceCustomerReceivables

ci:IntangibleAssetsGrossExcludingGoodwillIncludingVoba

ci:IntangibleAssetsNetExcludingGoodwillIncludingVoba

ci:InvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:InvestmentType

ci:LiabilityForClaimsAndClaimsAdjustmentExpenseAttributableToDisposalGroups
us-gaap:StatementBusinessSegments
ci:LiabilityForClaimsAndClaimsAdjustmentExpenseCurrent
us-gaap:StatementBusinessSegments
ci:LiabilityForClaimsAndClaimsAdjustmentExpenseCurrentIncludingDisposalGroups
us-gaap:StatementBusinessSegments
ci:LiabilityForClaimsAndClaimsAdjustmentExpenseExcludingPhysicianIncentivesAndOtherExpenses
us-gaap:StatementBusinessSegments
ci:LiabilityForClaimsAndClaimsAdjustmentExpenseIncludingDisposalGroups
us-gaap:StatementBusinessSegments
ci:LiabilityForClaimsAndClaimsAdjustmentExpenseNoncurrent
us-gaap:StatementBusinessSegments
ci:LiabilityForClaimsAndClaimsAdjustmentExpenseNoncurrentIncludingDisposalGroups

ci:LiabilityForFuturePolicyBenefitAfterReinsuranceCurrent

ci:LiabilityForFuturePolicyBenefitAfterReinsuranceNoncurrent

ci:LiabilityForFuturePolicyBenefitsAttributableToDisposalGroups

ci:LiabilityForFuturePolicyBenefitsCurrentIncludingDisposalGroups

ci:LiabilityForFuturePolicyBenefitsIncludingDisposalGroups

ci:LiabilityForFuturePolicyBenefitsNoncurrentIncludingDisposalGroups

ci:LiabilityForFuturePolicyBenefitsPercentSupportedByAssetsHeldInTrust
us-gaap:StatementBusinessSegments
ci:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseLongDurationNet
us-gaap:StatementBusinessSegments
ci:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetIncludingDisposalGroups

ci:LongTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:InvestmentType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
ci:MarketableSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:ValuationTechnique

ci:MaximumPercentLevel2InvestmentsForeignBondsBrokerQuoteBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
ci:MortgageLoansOnRealEstateCommercialAndConsumerNetBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByMeasurementBasis

ci:NonGuaranteedSeparateAccountAssetsClassifiedInFairValueHierarchy
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType

ci:NonGuaranteedSeparateAccountAssetsClassifiedInFairValueHierarchyBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType

ci:NonGuaranteedSeparateAccountAssetsPricedAtNetAssetValueAsAPracticalExpedient

ci:NonGuaranteedSeparateAccountAssetsPricedAtNetAssetValueAsAPracticalExpedientBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:NoninsuranceCustomerReceivablesExcludingPharmaceuticalManufacturersReceivable

ci:OtherLongTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:InvestmentType

ci:OtherShortTermDebtCurrentMaturitiesOfLongTermDebtAndLeaseObligationsCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
ci:OtherShortTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByMeasurementFrequency

ci:PharmaceuticalManufacturerReceivable

ci:PharmacyAndServiceCostsPayable

ci:PolicyholderContractDepositCurrent

ci:PolicyholderContractDepositNoncurrent

ci:PolicyholderContractDepositsAttributableToDisposalGroups

ci:PolicyholderContractDepositsCurrentIncludingDisposalGroups

ci:PolicyholderContractDepositsIncludingDisposalGroups

ci:PolicyholderContractDepositsNoncurrentIncludingDisposalGroups

ci:ReceivablesNetCurrentIncludingDisposalGroups
us-gaap:StatementBusinessSegments
ci:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustmentsIncludingDisposalGroups

ci:ReinsuranceRecoverablesIncludingDisposalGroups
ci:CreditRatingNationallyRecognizedStatisticalRatingOrganizationNRSRO, us-gaap:ProductOrService
ci:CreditRatingNationallyRecognizedStatisticalRatingOrganizationNRSRO, us-gaap:ProductOrService, us-gaap:CededCreditRisk
ci:CreditRatingNationallyRecognizedStatisticalRatingOrganizationNRSRO, us-gaap:ProductOrService, us-gaap:CededCreditRisk, us-gaap:CededCreditRiskCollateralization
ci:CreditRatingNationallyRecognizedStatisticalRatingOrganizationNRSRO, us-gaap:ProductOrService, us-gaap:CededCreditRiskCollateralization
us-gaap:CededCreditRiskCollateralization
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:CededCreditRiskCollateralization
us-gaap:BalanceSheetLocation
ci:ReinsuranceRecoverablesNet

ci:ReinsuranceRecoverablesNonCurrent

ci:SeparateAccountAssetsBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:SeparateAccountAssetsClassifiedInFairValueHierarchy
us-gaap:FairValueByFairValueHierarchyLevel

ci:SeparateAccountAssetsClassifiedInFairValueHierarchyBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:AwardType
ci:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumberOfEmployeesHolding

ci:ShortTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale
us-gaap:InvestmentType
us-gaap:ShortdurationInsuranceContractsAccidentYear, us-gaap:StatementBusinessSegments
ci:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseUsedInClaimsDevelopmentNet
us-gaap:StatementBusinessSegments

ci:StatutoryAccountingPracticesAmountPermittedLendingAuthorityOfLifeInsuranceSubsidiaryToParent

ci:UnearnedPremiumsCurrent

ci:UnearnedPremiumsCurrentIncludingDisposalGroups

ci:UnearnedPremiumsIncludingDisposalGroups

ci:UnearnedPremiumsNoncurrent

ci:UnearnedPremiumsNoncurrentIncludingDisposalGroups
us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument
ci:VariableInterestEntityNumberOfEntities
us-gaap:FinancialInstrument, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument
ci:VariableInterestEntityOffBalanceSheetCommitmentAmount
us-gaap:FinancialInstrument, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:AccountsAndOtherReceivablesNetCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
us-gaap:UnusualOrInfrequentItem
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AlternativeInvestment
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:FairValueByMeasurementFrequency

us-gaap:AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries

us-gaap:AssetsHeldByInsuranceRegulators
us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument
us-gaap:AssetsNet
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperation

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
ci:ShortTermInvestmentsAndCashEquivalents
us-gaap:CashCashEquivalentsAndShortTermInvestments

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CommercialPaper
us-gaap:ConsolidatedEntities

us-gaap:DebtInstrumentRepurchasedFaceAmount
us-gaap:SubsequentEventType

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments

us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments

us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments
ci:InvestmentsCreditRating
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
ci:InvestmentsCreditRating, us-gaap:FinancialInstrument
ci:InvestmentsCreditRating
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
ci:InvestmentsCreditRating, us-gaap:FinancialInstrument
ci:InvestmentsCreditRating
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
ci:InvestmentsCreditRating, us-gaap:FinancialInstrument
ci:InvestmentsCreditRating
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
ci:InvestmentsCreditRating, us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleExcludingAccruedInterest
us-gaap:FinancialInstrument
us-gaap:StatementBusinessSegments
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DebtSecuritiesAvailableForSaleMeasurementInput

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsPolicyholderLiabilities

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeAssets
us-gaap:CededCreditRisk, us-gaap:GuaranteedInsuranceContractTypeOfBenefit
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:GuaranteedInsuranceContractTypeOfBenefit
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeLiabilities
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:GuaranteedInsuranceContractTypeOfBenefit
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherAssets
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherLiabilities
us-gaap:ConsolidatedEntities
us-gaap:DueFromAffiliates
us-gaap:ConsolidatedEntities
us-gaap:DueToAffiliateCurrentAndNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:DueToAffiliateNoncurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EquitySecuritiesFVNINoncurrent

us-gaap:EquitySecuritiesFvNiCost

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount

us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments
us-gaap:FairValueByAssetClass
us-gaap:FairValueByAssetClass, us-gaap:InvestmentType
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentCurrent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:ConsolidatedEntities
us-gaap:GuaranteeObligationsCurrentCarryingValue
us-gaap:ProductOrService, us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:Investments
us-gaap:InvestmentType
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsInAndAdvancesToAffiliatesAmountOfEquity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:StatementBusinessSegments
us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

us-gaap:LiabilityForFuturePolicyBenefitAfterReinsurance
us-gaap:Range
us-gaap:LiabilityForFuturePolicyBenefitsInterestRate
us-gaap:StatementBusinessSegments
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:ConsolidatedEntities
us-gaap:ProductOrService, us-gaap:LossContingenciesByNatureOfContingency
us-gaap:LossContingencyAccrualAtCarryingValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:MarketableSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:ValuationTechnique
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:MortgageLoansOnRealEstateCommercialAndConsumerNet
us-gaap:FairValueByMeasurementBasis
us-gaap:ProductOrService, us-gaap:GuaranteedInsuranceContractTypeOfBenefit
us-gaap:NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
us-gaap:ProductOrService, us-gaap:GuaranteedInsuranceContractTypeOfBenefit
us-gaap:NetAmountAtRiskByProductAndGuaranteeNetAmountAtRisk
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanToValue
us-gaap:NotesReceivableGross
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:NotesReceivableNet

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherLongTermDebtNoncurrent

us-gaap:OtherLongTermInvestments
us-gaap:InvestmentType
us-gaap:ConsolidatedEntities
us-gaap:OtherShortTermInvestments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:PolicyholderContractDeposits

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount
us-gaap:StatementBusinessSegments
us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments

us-gaap:ReinsuranceRecoverables

us-gaap:ReinsuranceRecoverablesAllowance

us-gaap:RestrictedCashNoncurrent

us-gaap:SeparateAccountAssets

us-gaap:SeparateAccountsLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility
us-gaap:ShortTermDebtWeightedAverageInterestRate
us-gaap:CreditFacility
us-gaap:ShortTermDebtType
us-gaap:ShortdurationInsuranceContractsAccidentYear, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne
us-gaap:ShortdurationInsuranceContractsAccidentYear, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsIncurredClaimsAndAllocatedClaimAdjustmentExpenseNet
us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsAccidentYear, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsNumberOfReportedClaims

us-gaap:StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments

us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired

us-gaap:StatutoryCapitalAndSurplusApplyingNationalAssociationOfInsuranceCommissionersNAICPractices

us-gaap:TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests

us-gaap:TreasuryStockShares

us-gaap:UnearnedPremiums

us-gaap:UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance
us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument
us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount
us-gaap:FinancialInstrument, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Treasury Stock Shares
DividendsAndRepurchase
Dividends Common Stock Cash
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄4.04.04.04.04.04.04.04.04.04.04.0NANANA74.0NANANA
us-gaap:CommonStockSharesIssued █▇▆▅▅▅▄▂▂▂▁394.0393.0390.0389.0389.0388.0386.0384.0384.0384.0381.494NANANA296.145NANANA
us-gaap:CommonStockSharesOutstanding NANA354.771NANANA372.531NANANA380.924NANANA0.0NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█344.929351.976NA367.19370.697374.639NA378.321380.969384.024NA246.112245.339245.788NANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOption▄▄1.51.5NA4.64.04.1NA3.65.42.8NA0.90.9NANANANANA
us-gaap:EarningsPerShareBasic ▃▃█▃▄▃▂▃▃▃▁▃▃▃▁▂▃▂4.33.3311.4000000000000023.814.773.192.633.63.733.610.563.183.323.781.092.253.22.34
us-gaap:EarningsPerShareDiluted ▃▃█▃▄▃▂▃▃▃▁▃▃▃▁▂▃▂4.253.311.33.784.733.152.63.573.73.560.553.143.293.721.072.213.152.3
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ci:Evernorth█▁32592.030620.0NANA28602.027255.0NANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ci:GroupDisabilityAndOther▁▁████████▇███129.0139.01283.01314.01328.01339.01293.01284.01309.01296.01246.01262.01282.01271.0NANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ci:HealthServicesNANANA29944.028602.027255.027260.027598.027987.026949.03772.01109.01113.01071.0NANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ci:IntegratedMedicalNANANA9629.09237.09860.09208.09148.08968.09195.08297.08174.08170.08150.0NANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ci:InternationalMarkets█▇█▅▆▅▄▃▃▄▁▁▁▁1582.01558.01578.01477.01492.01460.01447.01407.01383.01422.01335.01325.01324.01339.0NANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ci:USMedical█▁10456.010362.0NANA9237.09860.0NANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 TTM Greenblatt ROC _ _▆▆▄▆█▆▄▆▆▇▁2147.01957.01345.02108.02639.02061.01561.02123.02163.02230.0559.0NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:BenefitsLossesAndExpenses ████▇▇▇▇▇▇▂▁▁▁40984.039014.040367.038847.036626.036408.036684.036433.036656.035716.013741.010325.010319.010105.0NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▄▂█▄▅▂▂▃▄▄▁▂▁▂1621.0791.03815.01635.02493.0595.0894.01458.01725.01797.0290.0758.0510.0689.0NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest █▇█▇▆▆▆▆▄▅▇▁▁▄8.06.09.06.04.04.05.04.00.02.07.0-7.0-6.00.0NANANANA
us-gaap:CostOfGoodsAndServicesSold ███▇▇▇▇▇▇▇▂▁▁▁29001.027235.027059.026624.025611.024190.024103.024552.024963.024050.03017.0602.0613.0561.0NANANANA
 us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal us-gaap:DisposalGroupClassification,us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperations,ci:USGroupDisabilityAndLifeInsuranceBusinessNANA4200.0NANANANANANANANANANANANANANANA
us-gaap:GainsLossesOnExtinguishmentOfDebt █▃██▇▁-10.0-131.00.00.0-14.0-185.0NANA0.00.0NANANANANA-321.0NANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▃▃█▃▄▃▂▃▃▃▁▂▂▂▂▂▂▂1898.01513.05378.01804.02289.01397.01261.01763.01758.01788.0228.01033.01102.01218.0758.0824.01134.0890.0
us-gaap:IncomeTaxExpenseBenefit ▃▃█▃▄▂▂▃▃▃▁▂▂▂422.0342.01236.0406.0529.0208.0277.0409.0348.0416.081.0259.0294.0301.0NANANANA
us-gaap:IncomeTaxesPaidNet █▁▃▇▁▁▂▃▇▁▂▂▃▁1351.0122.0429.01218.0109.081.0169.0417.01161.029.0252.0248.0488.031.0NANANANA
us-gaap:InterestPaidNet ▅▆▅▆▆▇▆▆█▆▂▁▂▁308.0331.0327.0369.0348.0395.0388.0392.0488.0377.0100.040.081.046.0NANANANA
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▇█▅█▄▆▅▂▁▃▂▁▁▁9.010.07.010.06.08.07.03.02.04.03.02.02.02.0NANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▃▃█▃▄▃▂▃▃▃▁▂▂▂▁▂▂▂1467.01161.04135.01388.01754.01181.0977.01351.01408.01368.0144.0772.0806.0915.0266.0560.0813.0598.0
us-gaap:NetInvestmentIncome ▄▆▆▃▁▅▅▅▅▅█▅▅▄310.0391.0371.0297.0223.0353.0355.0349.0340.0346.0444.0355.0352.0329.0NANANANA
us-gaap:OperatingIncomeLoss ▆▆▄▆█▆▄▆▆▇▁▃▃▄2147.01957.01345.02108.02639.02061.01561.02123.02163.02230.0559.01132.01161.01308.0NANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▂▂▅█▁▄▅▆▆▅▄▃▃154.0-370.0-320.0247.0739.0-586.0-88.0107.0317.0429.0146.0-14.0-296.0-226.0NANANANA
us-gaap:OtherNonoperatingIncomeExpense ▄▃▃▃▂▂▂▂▁▁▄▇██-298.0-314.0-337.0-336.0-374.0-391.0-391.0-411.0-428.0-452.0-286.0-99.0-56.0-57.0NANANANA
us-gaap:PolicyholderBenefitsAndClaimsIncurredNet ▇▅█▇▂▆▅▄▄▄▂▁▁▁8484.08005.08847.08429.07112.08322.07889.07734.07576.07620.07108.06803.06845.06772.0NANANANA
us-gaap:PremiumsEarnedNet ▆▆▇▇▆█▅▅▄▅▁▁▁▁10323.010214.010699.010682.010406.010840.010005.09935.09803.09971.09108.08994.09012.08999.0NANANANA
us-gaap:ProfitLoss ▃▃█▃▄▃▂▃▃▃▁▂▂▂1476.01171.04142.01398.01760.01189.0984.01354.01410.01372.0147.0774.0808.0917.0NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService ci:HomeDeliveryAndSpecialty█████▇▇▇█▇▂▁▁▁13014.012458.012473.012422.012183.011714.011875.011837.012272.011784.01775.0747.0758.0717.0NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService ci:NetworkPharmacy█▇█▇▇▇▇▇▇▇▂▁▁▁15414.014179.014374.013968.013090.012142.012477.012923.012758.012273.01415.00.00.00.0NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService ci:OtherPharmacy█▇▇▇▇▆▇▆▆▆▁▁▁▁1619.01388.01458.01412.01291.01242.01293.01227.01258.01122.067.00.00.00.0NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService ci:ServiceFees▇▇▆▃▁▄▅▆██2345.02327.02279.02120.01979.02154.02214.02249.02376.02390.0NANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:Product███▇▇▇▇▇▇▇▂▁▁▁30047.028025.028305.027802.026564.025098.025645.025987.026288.025179.03257.0747.0758.0717.0NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:Service█▇▇▆▆▆▇▇██▂▁▁▁2451.02341.02337.02174.02072.02178.02240.02285.02388.02450.01491.01361.01358.01368.0NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:ServiceOther█▁▄▄▇▂▂▃▁▅106.014.058.054.093.024.026.036.012.060.0NANANANANANANANA
us-gaap:Revenues ████▇▇▇▇▇▇▂▁▁▁▁▁▁▁43131.040971.041712.040955.039265.038469.038245.038556.038819.037946.014300.011457.011480.011413.010632.010372.010374.010428.0
us-gaap:SellingGeneralAndAdministrativeExpense ▂▄█▄▅▅█▅▅▄▅▂▂▁2996.03279.03966.03301.03407.03398.03957.03413.03380.03303.03480.02872.02837.02745.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:Assets ▃▁▄██▃▄▃▃▃▂154207.0152081.0155451.0160044.0159628.0154711.0155774.0154847.0154401.0154348.0153226.0NANANA61759.0NANANA
us-gaap:Liabilities ▂▁▂██▆▆▆▇██105440.0103867.0105065.0111946.0112223.0109590.0110395.0110114.0110552.0111897.0112154.0NANANA47999.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▃▁▄██▃▄▃▃▃▂154207.0152081.0155451.0160044.0159628.0154711.0155774.0154847.0154401.0154348.0153226.0NANANA61759.0NANANA
us-gaap:StockholdersEquity ▇▆█▆▆▄▄▄▃▂▁48709.048149.050321.048032.047366.045079.045338.044696.043815.042408.041028.0NANANA13711.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AssetsCurrent ▃▃▅██▆▆▁▁▁▁25011.025554.027799.034557.034880.030877.029845.021168.020709.021136.020430.0NANANA9311.0NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▁▂▃▂▂▂▂▂▁▂▁█▁▁▁3821.06505.010182.05344.07185.04452.04619.04577.03610.04976.03855.024032.03634.02771.02972.0NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▁▄█▃▅▂▂▂▁▂▁3878.06544.010245.05406.07503.04577.04668.04577.03610.04976.03855.0NANANA2972.0NANANA
us-gaap:ShortTermInvestments ▃▄▃▃▃▁▁▄▆▆█1305.01477.01331.01324.01190.0973.0937.01371.01665.01662.02045.0NANANA2136.0NANANA
us-gaap:ReceivablesNetCurrent █▅▃▅▄▃▁▃▃▂▁15462.013588.012191.013488.012694.011735.010716.011719.011700.010941.010473.0NANANA3155.0NANANA
us-gaap:InventoryNet ▇▆█▄▅▄▄▁▂▃▆3042.02919.03165.02657.02712.02565.02661.02160.02298.02382.02821.0NANANA228.0NANANA
us-gaap:OtherAssetsCurrent ▅▂▁█▄█▅▅▅▃▄1381.01065.0930.01722.01311.01733.01400.01341.01436.01175.01236.0NANANA820.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA9780.0NANANA8921.0NANANA7958.0NANANA4613.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType ci:AssetsHeldUnderCapitalLeasesAndOtherCapitalizedPropertyPlantAndEquipmentNANA2719.0NANANANANANANA2264.0NANANA1622.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNANA7061.0NANANANANANANA5694.0NANANA2991.0NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA5575.0NANANA4504.0NANANA3396.0NANANA3050.0NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType ci:AssetsHeldUnderCapitalLeasesAndOtherCapitalizedPropertyPlantAndEquipmentNANA1527.0NANANANANANANA981.0NANANA866.0NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNANA4048.0NANANANANANANA2415.0NANANA2184.0NANANA
us-gaap:AmortizationOfIntangibleAssets ▆▆▆▆▆▆████▂▁▁▁503.0495.0495.0493.0496.0498.0735.0734.0737.0743.0136.048.024.027.0NANANANA
us-gaap:PropertyPlantAndEquipmentNet NANA4205.0NANANA4417.04448.04538.04523.04562.0NANANA1563.0NANANA
 us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType ci:AssetsHeldUnderCapitalLeasesAndOtherCapitalizedPropertyPlantAndEquipmentNANA1192.0NANANANANANANA1283.0NANANA756.0NANANA
 us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNANA3013.0NANANANANANANA3279.0NANANA807.0NANANA
us-gaap:LongTermInvestments ▄▃▃▂▂▁▂█▇▇▆23622.022821.023262.021952.021338.020608.021542.028904.028180.027257.026929.0NANANA26483.0NANANA
us-gaap:Goodwill █▂▂▂▂▂▂▁▁▁▁46063.044635.044648.044685.044590.044584.044602.044462.044449.044537.044505.0NANANA6164.0NANANA
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill NANA8500.0NANANA8400.0NANANA8400.0NANANANANANANA
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:TradeNamesNANA8400.0NANANA8400000.0NANANA8400000.0NANANANANANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▁▁▂▂▃▃▄▅▆▇█35007.034792.035179.035492.035791.036162.036562.037084.037717.038338.039003.0NANANA345.0NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationshipsNANA26408.0NANANA27865.0NANANA30238.0NANANA224.0NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:OtherIntangibleAssetsNANA371.0NANANA297.0NANANA365.0NANANA121.0NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▅█▄▇▂▅508.0534.0552.0530.0544.0514.0536.0NANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▇█▇▇▇▅▆▆▅▁2654.02551.02687.02480.02529.02517.02283.02379.02318.02276.01630.0NANANA1431.0NANANA
us-gaap:EquitySecuritiesFvNi NA211.0202.0NANANANANANANA415.0NANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel,us-gaap:FairValueByMeasurementFrequency us-gaap:FairValueInputsLevel1,us-gaap:FairValueMeasurementsRecurring▁█▁50.056.050.0NANANANA7.08.08.0384.0NANANA412.0NANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel,us-gaap:FairValueByMeasurementFrequency us-gaap:FairValueInputsLevel2,us-gaap:FairValueMeasurementsRecurring█▁▁166.0165.0165.0NANANANA79.051.049.043.0NANANA73.0NANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel,us-gaap:FairValueByMeasurementFrequency us-gaap:FairValueInputsLevel3,us-gaap:FairValueMeasurementsRecurring▄▄▄31.031.031.0NANANANA32.032.032.032.0NANANA103.0NANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency us-gaap:FairValueMeasurementsRecurring▂█▁247.0252.0246.0NANANANA118.091.089.0459.0NANANA588.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AccountsPayableCurrent ██▇▆▇█▅▂▂▂▁5647.05640.05478.05327.05413.05585.05090.04502.04517.04488.04366.0NANANA184.0NANANA
us-gaap:DebtCurrent ▂▁▄█▆▆▇▆▃▄▄1532.0404.03374.06449.04750.04340.05514.04712.02310.02915.02955.0NANANA240.0NANANA
us-gaap:LiabilitiesCurrent ▃▂▃█▇▆▆▃▁▂▁34711.033470.036022.043886.042179.040380.040138.034447.031867.032969.031895.0NANANA11009.0NANANA
 us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument ci:NotesDue202026InterestNANANA500.0498.0497.0496.0NANANA0.0NANANANANANANA
 us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument ci:NotesDue20204375InterestNANANA250.0250.0249.0249.0NANANA0.0NANANANANANANA
 us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument ci:NotesDue2020FloatingRateInterestExpressScriptsNANANA400.0400.0400.0400.0NANANA0.0NANANANANANANA
 us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument ci:NotesDue202134InterestNANA1249.01248.0NANANANANANANANANANANANANANA
 us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument ci:NotesDue2021637InterestNA78.078.078.078.0NA0.0NANANANANANANANANANANA
 us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument ci:NotesDue202239InterestNA181.0NANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument ci:NotesDue20224InterestNA120.0NANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument ci:NotesDueMarch12021FloatingRateInterestNANANA1399.01398.0NA0.0NANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityCurrent ▁▂▂▆▅██149.0152.0152.0160.0158.0165.0166.0NANANANANANANANANANANA
 us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities srt:ParentCompanyNANA616.0NANANA457.0NANANA418.0NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue2022305Interest█▇▆▆▅▄▃▃▂▂▁493.0491.0490.0489.0488.0487.0485.0485.0483.0482.0481.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue202239InterestNANA972.0972.0972.0972.0999.0999.0999.0998.0998.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue20224InterestNANA276.0276.0276.0276.0747.0747.0746.0746.0746.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue2023375Interest▁▁▅▅▅▅█████1184.01184.02181.02180.02180.02179.03088.03087.03087.03085.03085.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue20233Interest█▇▆▆▅▄▃▃▂▂▁980.0978.0975.0973.0971.0969.0966.0965.0963.0961.0959.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue2023765Interest▁▁▁▁▁▁█████63.063.063.063.063.063.0100.0100.0100.0100.0100.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue2023FloatingRateInterest█▄▄▄▄▄▄▄▁▁▁699.0698.0698.0698.0698.0698.0698.0698.0697.0697.0697.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue202435Interest██▆▆▅▄▃▃▂▂▁980.0979.0977.0976.0974.0973.0970.0970.0969.0968.0966.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue2025325Interest████▁▁▁▁▁▁▁896.0896.0896.0896.0895.0895.0895.0895.0895.0895.0895.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue20254125Interest█▇▇▄▄▄▂▂▂▁▁2192.02191.02191.02189.02189.02189.02188.02188.02188.02187.02187.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue202645Interest▁▁▃▃▃▃▄▆▆▆█1504.01504.01505.01505.01505.01505.01506.01507.01507.01507.01508.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue2027305█▁▁▁▁▁▁▁▁▁▁596.0595.0595.0595.0595.0595.0595.0595.0595.0595.0595.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue202734Interest█▇▇▆▅▄▃▃▂▂▁1416.01413.01410.01406.01404.01400.01396.01396.01392.01390.01386.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue20284375Interest██▇▆▅▄▃▂▂▁▁3781.03781.03780.03779.03778.03777.03776.03775.03775.03774.03774.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue203024Interest██████▁1490.01490.01489.01489.01489.01488.00.0NANANANANANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue20312375Interest█▁1507.01489.0NANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue203848Interest█▂▂▂▂▂▁▁▁▁▁2191.02180.02180.02180.02179.02179.02178.02178.02178.02178.02178.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue204032Interest██████▁743.0742.0742.0742.0742.0742.00.0NANANANANANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue20416125Interest▁▁▁▁▁▁▃▆▆██490.0490.0490.0490.0490.0490.0491.0492.0492.0493.0493.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue204648Interest████▁▁█████1465.01465.01465.01465.01464.01464.01465.01465.01465.01465.01465.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue204849Interest█▆▆▆▃▃▁▁▁▁▁2967.02966.02966.02966.02965.02965.02964.02964.02964.02964.02964.0NANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument ci:NotesDue205034Interest██████▁1235.01235.01235.01235.01235.01235.00.0NANANANANANANANANANANA
us-gaap:LongTermDebtAndCapitalLeaseObligations ▂▂▁▁▃▃▃▄▆▇█31606.031568.029545.029537.031774.032147.031893.034041.036885.037571.039523.0NANANA5199.0NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▁▁▂▅▅▄█8867.08832.08939.09142.09170.09066.09387.0NANANA9453.0NANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNANA962.0NANANA855.0NANANA560.0NANANANANANANA
us-gaap:MinorityInterest █▆██▄█▆▁▁▄█7.06.07.07.05.07.06.03.03.05.07.0NANANA0.0NANANA
us-gaap:OtherLiabilitiesNoncurrent ▆▆▇▇█▇▆▃▃▃▁4330.04485.04629.04552.04775.04519.04460.03919.03930.03832.03470.0NANANA2838.0NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▂▆█▃▇▁▄449.0480.0491.0461.0482.0445.0465.0NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA170.0NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA118.0NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA89.0NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA57.0NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA121.0NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:StockholdersEquity ▇▆█▆▆▄▄▄▃▂▁48709.048149.050321.048032.047366.045079.045338.044696.043815.042408.041028.0NANANA13711.0NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ████▇▇▇▇▇▆▆▁▁▁▁48716.048155.050328.048039.047371.045086.045344.044699.043818.042413.041035.015555.014743.014195.013711.0NANANA
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄4.04.04.04.04.04.04.04.04.04.04.0NANANA74.0NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▇▆▅▅▄▃▃▂▁▁29403.029254.028975.028777.028699.028554.028306.028115.027891.027855.027751.0NANANA2940.0NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▇▅▅▄▃▃▂▂▁30513.029389.028575.024440.023052.021298.020162.019185.017834.016426.015088.0NANANA15800.0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▄▆█▇▂▆▆▅▄▁-1077.0-1231.0-861.0-541.0-788.0-1527.0-941.0-858.0-965.0-1282.0-1711.0NANANA-1082.0NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities srt:ParentCompanyNANA-861.0NANANA-941.0NANANA-1711.0NANANANANANANA
us-gaap:TreasuryStockValue █▇▅▄▃▃▂▂▂▁▁10134.09267.06372.04648.03601.03250.02193.01750.0949.0595.0104.0NANANA4021.0NANANA
us-gaap:MinorityInterest █▆██▄█▆▁▁▄█7.06.07.07.05.07.06.03.03.05.07.0NANANA0.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▃█▃▆▄▆▅▃▆▂▂▃▅-296.01093.04294.0895.03274.01887.02793.02461.01039.03192.0126.0624.0995.02025.0NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇█▇▇▇▇▇▇▇▁▇▇▇-2307.0-717.04420.0-938.0-237.0-269.0-271.0-304.0-634.0475.0-24704.0125.0-99.0-1700.0NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▁▁▂▂▂▂▂▂▂▄█▂▂-62.0-4051.0-4721.0-1682.0-312.0-1818.0-1707.0-1173.0-1773.0-2534.04400.019657.0-12.0-530.0NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▄▅▄▅▄▅▅▄▅▁█▅▄-2666.0-3701.04041.0-1717.02747.0-237.0834.0967.0-1366.01121.0-20177.020398.0863.0-201.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:DepreciationDepletionAndAmortization ▆▆▆▆▆▆████▂▁▁▁731.0715.0713.0702.0694.0693.0927.0913.0914.0897.0257.0162.0136.0140.0NANANANA
us-gaap:IncreaseDecreaseInInventories ▅▂█▄▅▄█▃▄▁▆▄▄▄123.0-247.0509.0-55.0146.0-96.0512.0-137.0-84.0-440.0191.031.0-21.0-94.0NANANANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▅▆▅▆▂▅▁▆▅▆▃▇▇█-104.0-84.0-129.0-81.0-243.0-144.0-302.0-68.0-106.0-83.0-213.0-21.0-46.08.0NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▃█▃▆▄▆▅▃▆▂▂▃▅-296.01093.04294.0895.03274.01887.02793.02461.01039.03192.0126.0624.0995.02025.0NANANANA
us-gaap:ProfitLoss ▃▃█▃▄▃▂▃▃▃▁▂▂▂1476.01171.04142.01398.01760.01189.0984.01354.01410.01372.0147.0774.0808.0917.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇█▇▇▇▇▇▇▇▁▇▇▇-2307.0-717.04420.0-938.0-237.0-269.0-271.0-304.0-634.0475.0-24704.0125.0-99.0-1700.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▁▁▂▂▂▂▂▂▂▄█▂▂-62.0-4051.0-4721.0-1682.0-312.0-1818.0-1707.0-1173.0-1773.0-2534.04400.019657.0-12.0-530.0NANANANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▁▂▁▁▁▂▁▁▁▁▂█-2.04262.00.00.0-5.03470.00.00.00.00.02972.020000.0NANANANANANA
us-gaap:RepaymentsOfLongTermDebt ▂█▃▄▂█▃▂▄▃▁▁▁▁379.04199.01150.02099.0589.04209.01151.0600.01740.01000.00.00.00.0131.0NANANA250.0
us-gaap:PaymentsOfDividendsCommonStock ▁█342.0345.0NANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▃█▅▄▂▃▂▃▂▂▁▁▁▂916.02794.01690.01028.0368.0956.0447.0674.0404.0462.032.00.00.0310.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4.04.04.04.04.04.04.04.04.04.04.074
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.1

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value3943933903893893883863843843843812960.0
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3543723800.00.0
Percentage of CommonStockSharesOutstanding100.0100.0100.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value344351367370374378380384246245245
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value1500000.01500000.04600000.04000000.04100000.03600000.05400000.02800000.0900000.0900000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.33.3311.43.814.773.192.633.63.733.610.563.183.323.781.092.253.22.34
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.253.311.33.784.733.152.63.573.73.560.553.143.293.721.072.213.152.3
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Benefits Losses And Expenses

us-gaap:BenefitsLossesAndExpenses

us-gaap:BenefitsLossesAndExpenses


Benefits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4098439014403673884736626364083668436433366563571613741103251031910105
Percentage of BenefitsLossesAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues95.095.296.894.993.394.695.994.594.494.196.190.189.988.5

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1621791381516352493595894145817251797290758510689
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3.81.99.14.06.31.52.33.84.44.72.06.64.46.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8.06.09.06.04.04.05.04.00.02.07.0-7.0-6.00.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0
Percentage of Revenues0.00.00.00.00.00.00.00.00.00.00.0-0.1-0.10.0

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value290012723527059266242561124190241032455224963240503017602613561
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues67.266.564.965.065.262.963.063.764.363.421.15.35.34.9

Disposal Group Not Discontinued Operation Gain Loss On Disposal

us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal

us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperations, ci:USGroupDisabilityAndLifeInsuranceBusiness


Disposal
Period End2020-12-31
Value4200
Percentage of DisposalGroupNotDiscontinuedOperationGainLossOnDisposal100.0
Percentage of Revenues0.0
Percentage of Revenues us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperations ci:USGroupDisabilityAndLifeInsuranceBusiness0.0

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-04-302020-03-312019-06-302019-03-312017-09-30
Value-10000000.0-131000000.000-14000000.0-199000000.0-185000000.000-321000000.0
Percentage of GainsLossesOnExtinguishmentOfDebt100.0100.00.00.0100.0100.0100.00.00.0100.0
Percentage of Revenues-0.0-0.30.00.0-0.00.0-0.50.00.0-3.1

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value18981513537818042289139712611763175817882281033110212187588241134890
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.43.712.94.45.83.63.34.64.54.71.69.09.610.77.17.910.98.5

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

ci:CorporateAndEliminations


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-370.0-487.0-569.0-478.0-544.0-743.0-793.0-556.0-689.0-626.0-683.0-211.0-210.0-153.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-19.5-32.2-10.6-26.5-23.8-53.2-62.9-31.5-39.2-35.0-299.6-20.4-19.1-12.6
Percentage of Revenues-0.9-1.2-1.4-1.2-1.4-1.9-2.1-1.4-1.8-1.6-4.8-1.8-1.8-1.3
Percentage of Revenues ci:CorporateAndEliminations22.728.50.033.939.051.40.063.183.268.30.051.151.336.6

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:Evernorth


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value929749771694
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest48.949.533.749.7
Percentage of Revenues2.21.82.01.8
Percentage of Revenues us-gaap:OperatingSegments ci:Evernorth2.92.42.72.5

us-gaap:OperatingSegments, ci:GroupDisabilityAndOther


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1916421697129721551591559397135162103
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest1.01.178.45.45.65.212.39.08.85.242.513.114.78.5
Percentage of Revenues0.00.010.10.20.30.20.40.40.40.20.71.21.40.9
Percentage of Revenues us-gaap:OperatingSegments ci:GroupDisabilityAndOther14.711.50.07.49.75.40.012.411.87.20.010.712.68.1

us-gaap:OperatingSegments, ci:HealthServices


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10867716949689651108942102677783
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest60.233.749.776.854.763.052.744.76.57.06.8
Percentage of Revenues2.72.01.82.52.52.92.50.70.60.70.7
Percentage of Revenues us-gaap:OperatingSegments ci:HealthServices3.62.72.50.03.54.03.50.06.06.97.7

us-gaap:OperatingSegments, ci:IntegratedMedical


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8461543114074710119891157622848900972
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest46.967.481.659.257.356.364.7272.882.181.779.8
Percentage of Revenues2.13.93.02.02.62.53.04.37.47.88.5
Percentage of Revenues us-gaap:OperatingSegments ci:IntegratedMedical8.816.711.60.011.111.012.60.010.411.011.9

us-gaap:OperatingSegments, ci:InternationalMarkets


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value26022617125339023418418419522290194173213
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest13.714.93.214.017.016.814.610.411.112.439.518.815.717.5
Percentage of Revenues0.60.60.40.61.00.60.50.50.50.60.61.71.51.9
Percentage of Revenues us-gaap:OperatingSegments ci:InternationalMarkets16.414.50.017.126.116.00.013.114.115.60.014.613.115.9

us-gaap:OperatingSegments, ci:USMedical


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value1060100915431140
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest55.866.767.481.6
Percentage of Revenues2.52.53.93.0
Percentage of Revenues us-gaap:OperatingSegments ci:USMedical10.19.716.711.6

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value422342123640652920827740934841681259294301
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.00.83.01.01.30.50.71.10.91.10.62.32.62.6

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value135112242912181098116941711612925224848831
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3.10.31.03.00.30.20.41.13.00.11.82.24.30.3

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value308331327369348395388392488377100408146
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.70.80.80.90.91.01.01.01.31.00.70.30.70.4

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9.010.07.010.06.08.07.03.02.04.03.02.02.02.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value146711614135138817541181977135114081368144772806915266560813598
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3.42.89.93.44.53.12.63.53.63.61.06.77.08.02.55.47.85.7

Net Investment Income

us-gaap:NetInvestmentIncome

us-gaap:NetInvestmentIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value310391371297223353355349340346444355352329
Percentage of NetInvestmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.71.00.90.70.60.90.90.90.90.93.13.13.12.9

us-gaap:NetInvestmentIncome us-gaap:ConsolidationItems

ci:CorporateAndEliminations


Net
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.01.01.00.06.01.01.0-10.0119207.0
Percentage of NetInvestmentIncome0.30.30.40.01.70.30.3-2.926.85.62.0
Percentage of Revenues0.00.00.00.00.00.00.0-0.00.80.20.1
Percentage of Revenues ci:CorporateAndEliminations-0.1-0.1-0.1-0.00.0-0.1-0.11.10.0-4.8-1.7

us-gaap:NetInvestmentIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:Evernorth


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value5.03.03.025
Percentage of NetInvestmentIncome1.60.81.37.1
Percentage of Revenues0.00.00.00.1
Percentage of Revenues us-gaap:OperatingSegments ci:Evernorth0.00.00.00.1

us-gaap:OperatingSegments, ci:GroupDisabilityAndOther


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7779153152144162174170171180174176187175
Percentage of NetInvestmentIncome24.820.241.251.264.645.949.048.750.352.039.249.653.153.2
Percentage of Revenues0.20.20.40.40.40.40.50.40.40.51.21.51.61.5
Percentage of Revenues us-gaap:OperatingSegments ci:GroupDisabilityAndOther59.756.80.011.610.812.10.013.213.113.90.013.914.613.8

us-gaap:OperatingSegments, ci:HealthServices


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.03.025131517154.02.02.01.0
Percentage of NetInvestmentIncome0.71.37.13.74.35.04.30.90.60.60.3
Percentage of Revenues0.00.00.10.00.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:OperatingSegments ci:HealthServices0.00.00.10.00.10.10.10.00.20.20.1

us-gaap:OperatingSegments, ci:IntegratedMedical


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10449126120124111123111117120111
Percentage of NetInvestmentIncome35.022.035.733.835.532.635.525.033.034.133.7
Percentage of Revenues0.30.10.30.30.30.30.30.81.01.01.0
Percentage of Revenues us-gaap:OperatingSegments ci:IntegratedMedical1.10.51.30.01.41.21.30.01.41.51.4

us-gaap:OperatingSegments, ci:InternationalMarkets


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5559503826404239403836403637
Percentage of NetInvestmentIncome17.715.113.512.811.711.311.811.211.811.08.111.310.211.2
Percentage of Revenues0.10.10.10.10.10.10.10.10.10.10.30.30.30.3
Percentage of Revenues us-gaap:OperatingSegments ci:InternationalMarkets3.53.80.02.61.72.70.02.82.92.70.03.02.72.8

us-gaap:OperatingSegments, ci:USMedical


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value17225049126
Percentage of NetInvestmentIncome55.563.922.035.7
Percentage of Revenues0.40.60.10.3
Percentage of Revenues us-gaap:OperatingSegments ci:USMedical1.62.40.51.3

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2147195713452108263920611561212321632230559113211611308
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues5.04.83.25.16.75.44.15.55.65.93.99.910.111.5

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value154-370.0-320.0247739-586.0-88.0107317429146-14.0-296.0-226.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.4-0.9-0.80.61.9-1.5-0.20.30.81.11.0-0.1-2.6-2.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value122-273.0-476.0120709-428.0-51.0223343442
Percentage of OtherComprehensiveIncomeLossNetOfTax79.273.8148.848.695.973.058.0208.4108.2103.0
Percentage of Revenues0.3-0.7-1.10.31.8-1.1-0.10.60.91.2
Percentage of Revenues ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent0.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1518-90.014-42.013-170.0121411
Percentage of OtherComprehensiveIncomeLossNetOfTax9.7-4.928.15.7-5.7-2.2193.211.24.42.6
Percentage of Revenues0.00.0-0.20.0-0.10.0-0.40.00.00.0
Percentage of Revenues us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value154-370.0-320.0247739-586.0-83.0107317429146-14.0-296.0-226.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.094.3100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.4-0.9-0.80.61.9-1.5-0.20.30.81.11.0-0.1-2.6-2.0
Percentage of Revenues us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value17-115.024611372-171.0138-128.0-40.0-24.0
Percentage of OtherComprehensiveIncomeLossNetOfTax11.031.1-76.945.79.729.2-156.8-119.6-12.6-5.6
Percentage of Revenues0.0-0.30.60.30.2-0.40.4-0.3-0.1-0.1
Percentage of Revenues us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value154-370.0-320.0247739-586.0-83.0107317429146-14.0-296.0-226.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.094.3100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.4-0.9-0.80.61.9-1.5-0.20.30.81.11.0-0.1-2.6-2.0
Percentage of Revenues us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-298.0-314.0-337.0-336.0-374.0-391.0-391.0-411.0-428.0-452.0-286.0-99.0-56.0-57.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.7-0.8-0.8-0.8-1.0-1.0-1.0-1.1-1.1-1.2-2.0-0.9-0.5-0.5

Policyholder Benefits And Claims Incurred Net

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet


Policyholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value84848005884784297112832278897734757676207108680368456772
Percentage of PolicyholderBenefitsAndClaimsIncurredNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues19.719.521.220.618.121.620.620.119.520.149.759.459.659.3

Premiums Earned Net

us-gaap:PremiumsEarnedNet

us-gaap:PremiumsEarnedNet


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value103231021410699106821040610840100059935980399719108899490128999
Percentage of PremiumsEarnedNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues23.924.925.626.126.528.226.225.825.326.363.778.578.578.8

us-gaap:PremiumsEarnedNet us-gaap:ProductOrService

ci:DisabilityLifeAccident


Premiums
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1077110611241116106010491069104798710061009
Percentage of PremiumsEarnedNet10.110.410.810.310.610.610.910.510.811.211.2
Percentage of Revenues2.62.72.92.92.82.72.82.86.98.88.8
Percentage of Revenues ci:DisabilityLifeAccident0.00.00.00.00.00.00.00.00.00.00.0

ci:OtherPremiums


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value48572120262927333737
Percentage of PremiumsEarnedNet0.50.60.20.20.20.30.30.30.40.4
Percentage of Revenues0.10.10.10.00.10.10.10.10.10.1
Percentage of Revenues ci:OtherPremiums0.00.00.00.00.00.00.00.00.00.0

us-gaap:PremiumsEarnedNet us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

ci:IntegratedMedicalProducts, ci:IntegratedMedical


Premiums
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value81967912832075447396758366936685
Percentage of PremiumsEarnedNet76.776.076.875.975.476.174.474.2
Percentage of Revenues20.020.221.619.619.120.058.458.2
Percentage of Revenues ci:IntegratedMedicalProducts ci:IntegratedMedical0.00.00.00.00.00.00.00.0

ci:MedicalRiskProducts, ci:IntegratedMedical


Premiums
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value33973090346132453174306530392759269726432611
Percentage of PremiumsEarnedNet31.829.731.932.431.931.330.530.330.029.329.0
Percentage of Revenues8.37.99.08.58.27.98.019.323.523.022.9
Percentage of Revenues ci:MedicalRiskProducts ci:IntegratedMedical0.00.00.00.00.00.00.00.00.00.00.0

ci:MedicalRiskProducts, ci:USMedical


Premiums
Period End2021-06-302021-03-312020-06-302020-03-31
Value3578352330903461
Percentage of PremiumsEarnedNet34.734.529.731.9
Percentage of Revenues8.38.67.99.0
Percentage of Revenues ci:MedicalRiskProducts ci:USMedical0.00.00.00.0

ci:MedicareAdvantage, ci:IntegratedMedical


Premiums
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value18951904188115351562161016071418145514611498
Percentage of PremiumsEarnedNet17.718.317.415.315.716.416.115.616.216.216.6
Percentage of Revenues4.64.84.94.04.14.14.29.912.712.713.1
Percentage of Revenues ci:MedicareAdvantage ci:IntegratedMedical0.00.00.00.00.00.00.00.00.00.00.0

ci:MedicareAdvantage, ci:USMedical


Premiums
Period End2021-06-302021-03-312020-06-302020-03-31
Value2116209219041881
Percentage of PremiumsEarnedNet20.520.518.317.4
Percentage of Revenues4.95.14.84.9
Percentage of Revenues ci:MedicareAdvantage ci:USMedical0.00.00.00.0

ci:MedicarePartD, ci:IntegratedMedical


Premiums
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value360420462370404400525190157189228
Percentage of PremiumsEarnedNet3.44.04.33.74.14.15.32.11.72.12.5
Percentage of Revenues0.91.11.21.01.01.01.41.31.41.62.0
Percentage of Revenues ci:MedicarePartD ci:IntegratedMedical0.00.00.00.00.00.00.00.00.00.00.0

ci:MedicarePartD, ci:USMedical


Premiums
Period End2021-06-302021-03-312020-06-302020-03-31
Value410450420462
Percentage of PremiumsEarnedNet4.04.44.04.3
Percentage of Revenues1.01.11.11.2
Percentage of Revenues ci:MedicarePartD ci:USMedical0.00.00.00.0

ci:OtherCommercialMedicalProducts, ci:IntegratedMedical


Premiums
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value281283289261260241278261260259258
Percentage of PremiumsEarnedNet2.62.72.72.62.62.52.82.92.92.92.9
Percentage of Revenues0.70.70.80.70.70.60.71.82.32.32.3
Percentage of Revenues ci:OtherCommercialMedicalProducts ci:IntegratedMedical0.00.00.00.00.00.00.00.00.00.00.0

ci:OtherCommercialMedicalProducts, ci:USMedical


Premiums
Period End2021-06-302021-03-312020-06-302020-03-31
Value308310283289
Percentage of PremiumsEarnedNet3.03.02.72.7
Percentage of Revenues0.70.80.70.8
Percentage of Revenues ci:OtherCommercialMedicalProducts ci:USMedical0.00.00.00.0

ci:OtherGovernmentProducts, ci:IntegratedMedical


Premiums
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11171063106610481059101310651141111411401101
Percentage of PremiumsEarnedNet10.510.29.810.510.710.310.712.512.412.612.2
Percentage of Revenues2.72.72.82.72.72.62.88.09.79.99.6
Percentage of Revenues ci:OtherGovernmentProducts ci:IntegratedMedical0.00.00.00.00.00.00.00.00.00.00.0

ci:OtherGovernmentProducts, ci:USMedical


Premiums
Period End2021-06-302021-03-312020-06-302020-03-31
Value1227113810631066
Percentage of PremiumsEarnedNet11.911.110.29.8
Percentage of Revenues2.82.82.72.8
Percentage of Revenues ci:OtherGovernmentProducts ci:USMedical0.00.00.00.0

ci:StopLoss, ci:IntegratedMedical


Premiums
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value114611521161110710851067106910251010993980
Percentage of PremiumsEarnedNet10.711.110.711.110.910.910.711.311.211.010.9
Percentage of Revenues2.82.93.02.92.82.72.87.28.88.68.6
Percentage of Revenues ci:StopLoss ci:IntegratedMedical0.00.00.00.00.00.00.00.00.00.00.0

ci:StopLoss, ci:USMedical


Premiums
Period End2021-06-302021-03-312020-06-302020-03-31
Value1194119411521161
Percentage of PremiumsEarnedNet11.611.711.110.7
Percentage of Revenues2.82.92.93.0
Percentage of Revenues ci:StopLoss ci:USMedical0.00.00.00.0

ci:USMedicalProducts, ci:USMedical


Premiums
Period End2021-06-302021-03-312020-06-302020-03-31
Value8833870779128320
Percentage of PremiumsEarnedNet85.685.276.076.8
Percentage of Revenues20.521.320.221.6
Percentage of Revenues ci:USMedicalProducts ci:USMedical0.00.00.00.0

us-gaap:PremiumsEarnedNet us-gaap:StatementBusinessSegments

ci:InternationalMarkets


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value14421450143213601344137513521309130113041276124512621260
Percentage of PremiumsEarnedNet14.014.213.412.712.912.713.513.213.313.114.013.814.014.0
Percentage of Revenues3.33.53.43.33.43.63.53.43.43.48.910.911.011.0
Percentage of Revenues ci:InternationalMarkets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value147611714142139817601189984135414101372147774808917
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3.42.99.93.44.53.12.63.53.63.61.06.87.08.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

ci:HomeDeliveryAndSpecialty


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value130141245812473124221218311714118751183712272117841775747758717
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues30.230.429.930.331.030.531.030.731.631.112.46.56.66.3
Percentage of Revenues ci:HomeDeliveryAndSpecialty0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ci:NetworkPharmacy


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1541414179143741396813090121421247712923127581227314150.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax118.4113.8115.2112.4107.4103.7105.1109.2104.0104.179.70.00.00.0
Percentage of Revenues35.734.634.534.133.331.632.633.532.932.39.90.00.00.0
Percentage of Revenues ci:NetworkPharmacy0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ci:OtherPharmacy


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1619138814581412129112421293122712581122670.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.411.111.711.410.610.610.910.410.39.53.80.00.00.0
Percentage of Revenues3.83.43.53.43.33.23.43.23.23.00.50.00.00.0
Percentage of Revenues ci:OtherPharmacy0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ci:ServiceFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2345232722792120197921542214224923762390
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.018.718.317.116.218.418.619.019.420.3
Percentage of Revenues5.45.75.55.25.05.65.85.86.16.3
Percentage of Revenues ci:ServiceFees0.00.00.00.00.00.00.00.00.00.0

us-gaap:Product


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value300472802528305278022656425098256452598726288251793257747758717
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax230.9225.0226.9223.8218.0214.3216.0219.5214.2213.7183.5100.0100.0100.0
Percentage of Revenues69.768.467.967.967.765.267.167.467.766.422.86.56.66.3
Percentage of Revenues us-gaap:Product0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Service


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value24512341233721742072217822402285238824501491136113581368
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.818.818.717.517.018.618.919.319.520.884.0182.2179.2190.8
Percentage of Revenues5.75.75.65.35.35.75.95.96.26.510.411.911.812.0
Percentage of Revenues us-gaap:Service0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ServiceOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value106145854932426361260
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.10.50.40.80.20.20.30.10.5
Percentage of Revenues0.20.00.10.10.20.10.10.10.00.2
Percentage of Revenues us-gaap:ServiceOther0.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value431314097141712409553926538469382453855638819379461430011457114801141310632103721037410428
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ConsolidationItems

ci:CorporateAndEliminations


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1628.0-1708.0-1407.0-1409.0-1394.0-1445.0-963.0-881.0-828.0-916.0-350.0-413.0-409.0-418.0
Percentage of Revenues-3.8-4.2-3.4-3.4-3.6-3.8-2.5-2.3-2.1-2.4-2.4-3.6-3.6-3.7
Percentage of Revenues-3.8-4.2-3.4-3.4-3.6-3.8-2.5-2.3-2.1-2.4-2.4-3.6-3.6-3.7
Percentage of Revenues ci:CorporateAndEliminations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:Evernorth


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value32592306202860227255
Percentage of Revenues75.674.772.870.8
Percentage of Revenues75.674.772.870.8
Percentage of Revenues us-gaap:OperatingSegments ci:Evernorth100.0100.0100.0100.0

us-gaap:OperatingSegments, ci:GroupDisabilityAndOther


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value129139128313141328133912931284130912961246126212821271
Percentage of Revenues0.30.33.13.23.43.53.43.33.43.48.711.011.211.1
Percentage of Revenues0.30.33.13.23.43.53.43.33.43.48.711.011.211.1
Percentage of Revenues us-gaap:OperatingSegments ci:GroupDisabilityAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ci:HealthServices


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value299442860227255272602759827987269493772110911131071
Percentage of Revenues73.172.870.871.371.672.171.026.49.79.79.4
Percentage of Revenues73.172.870.871.371.672.171.026.49.79.79.4
Percentage of Revenues us-gaap:OperatingSegments ci:HealthServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ci:IntegratedMedical


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value96299237986092089148896891958297817481708150
Percentage of Revenues23.523.525.624.123.723.124.258.071.371.271.4
Percentage of Revenues23.523.525.624.123.723.124.258.071.371.271.4
Percentage of Revenues us-gaap:OperatingSegments ci:IntegratedMedical100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ci:InternationalMarkets


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15821558157814771492146014471407138314221335132513241339
Percentage of Revenues3.73.83.83.63.83.83.83.63.63.79.311.611.511.7
Percentage of Revenues3.73.83.83.63.83.83.83.63.63.79.311.611.511.7
Percentage of Revenues us-gaap:OperatingSegments ci:InternationalMarkets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ci:USMedical


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value104561036292379860
Percentage of Revenues24.225.323.525.6
Percentage of Revenues24.225.323.525.6
Percentage of Revenues us-gaap:OperatingSegments ci:USMedical100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value29963279396633013407339839573413338033033480287228372745
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.98.09.58.18.78.810.38.98.78.724.325.124.724.1

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value15420715208115545116004415962815471115577415484715440115434815322661759
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-31
Value819388154469274
Percentage of Assets52.752.345.2
Percentage of Assets52.752.345.2
Percentage of Assets srt:ParentCompany100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value10544010386710506511194611222310959011039511011411055211189711215447999
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets68.468.367.669.970.370.870.971.171.672.573.277.7

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-31
Value316173620628246
Percentage of Liabilities30.132.825.2
Percentage of Assets20.323.218.4
Percentage of Assets srt:ParentCompany38.644.440.8

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value15420715208115545116004415962815471115577415484715440115434815322661759
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-31
Value819388154469274
Percentage of LiabilitiesAndStockholdersEquity52.752.345.2
Percentage of Assets52.752.345.2
Percentage of Assets srt:ParentCompany100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value487094814950321480324736645079453384469643815424084102813711
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.631.732.430.029.729.129.128.928.427.526.822.2

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-31
Value503214533841028
Percentage of StockholdersEquity100.0100.0100.0
Percentage of Assets32.429.126.8
Percentage of Assets srt:ParentCompany61.455.659.2

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13761256547975102680346018
Percentage of StockholdersEquity2.92.71.22.22.31.81.10.0
Percentage of Assets0.90.80.40.60.70.50.30.0
Percentage of Assets ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-1656.0-1670.0-1628.0-1641.0-1471.0-1483.0-1497.0-1508.0
Percentage of StockholdersEquity-3.4-3.5-3.6-3.6-3.3-3.4-3.5-3.7
Percentage of Assets-1.0-1.0-1.1-1.1-0.9-1.0-1.0-1.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-261.0-374.0-446.0-275.0-413.0-285.0-245.0-221.0
Percentage of StockholdersEquity-0.5-0.8-1.0-0.6-0.9-0.7-0.6-0.5
Percentage of Assets-0.2-0.2-0.3-0.2-0.3-0.2-0.2-0.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value25011255542779934557348803087729845211682070921136204309311
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.216.817.921.621.920.019.213.713.413.713.315.1

us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Assets
Period End2020-12-312019-12-312018-12-31
Value421034257
Percentage of AssetsCurrent15.10.11.3
Percentage of Assets2.70.00.2
Percentage of Assets srt:ParentCompany5.10.00.4

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value3821650510182534471854452461945773610497638552403236342771297231851968
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.54.36.53.34.52.93.03.02.33.22.50.00.00.04.80.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312018-12-202017-12-31
Value41570.02430.00.0
Percentage of CashAndCashEquivalentsAtCarryingValue40.80.06.30.00.0
Percentage of Assets2.70.00.20.00.0
Percentage of Assets srt:ParentCompany5.10.00.40.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value3878654410245540675034577466845773610497638552972
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.54.36.63.44.73.03.03.02.33.22.54.8

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312018-12-31
Value4157243
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents40.66.3
Percentage of Assets2.70.2
Percentage of Assets srt:ParentCompany5.10.4

Short Term Investments

us-gaap:ShortTermInvestments

us-gaap:ShortTermInvestments


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1305147713311324119097393713711665166220452136
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.81.00.90.80.70.60.60.91.11.11.33.5

us-gaap:ShortTermInvestments us-gaap:InvestmentType

us-gaap:DebtSecurities


Short
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-31
Value9049069591125138713631320
Percentage of ShortTermInvestments69.361.372.182.183.382.064.5
Percentage of Assets0.60.60.60.70.90.90.9
Percentage of Assets us-gaap:DebtSecurities0.00.00.00.00.00.00.0

us-gaap:Mortgages


Short
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value5260132121323215
Percentage of ShortTermInvestments4.04.11.01.51.31.91.60.7
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Mortgages0.00.00.00.00.00.00.00.0

us-gaap:ShortTermInvestments


Short
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value349511359225257267316199
Percentage of ShortTermInvestments26.734.627.016.415.416.115.59.3
Percentage of Assets0.20.30.20.10.20.20.20.3
Percentage of Assets us-gaap:ShortTermInvestments0.00.00.00.00.00.00.00.0

Receivables Net Current

us-gaap:ReceivablesNetCurrent

us-gaap:ReceivablesNetCurrent


Receivables
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value15462135881219113488126941173510716117191170010941104733155
Percentage of ReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.08.97.88.48.07.66.97.67.67.16.85.1

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value30422919316526572712256526612160229823822821228
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.01.92.01.71.71.71.71.41.51.51.80.4

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1381106593017221311173314001341143611751236820
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.70.61.10.81.10.90.90.90.80.81.3

us-gaap:OtherAssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-31
Value4.04.014
Percentage of OtherAssetsCurrent0.40.31.1
Percentage of Assets0.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-31
Value9780892179584613
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0
Percentage of Assets6.35.75.27.5

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

ci:AssetsHeldUnderCapitalLeasesAndOtherCapitalizedPropertyPlantAndEquipment


Property
Period End2020-12-312018-12-312017-12-31
Value271922641622
Percentage of PropertyPlantAndEquipmentGross27.828.435.2
Percentage of Assets1.71.52.6
Percentage of Assets ci:AssetsHeldUnderCapitalLeasesAndOtherCapitalizedPropertyPlantAndEquipment0.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2020-12-312018-12-312017-12-31
Value706156942991
Percentage of PropertyPlantAndEquipmentGross72.271.664.8
Percentage of Assets4.53.74.8
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value5575450433963050
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0
Percentage of Assets3.62.92.24.9

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

ci:AssetsHeldUnderCapitalLeasesAndOtherCapitalizedPropertyPlantAndEquipment


Accumulated
Period End2020-12-312018-12-312017-12-31
Value1527981866
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment27.428.928.4
Percentage of Assets1.00.61.4
Percentage of Assets ci:AssetsHeldUnderCapitalLeasesAndOtherCapitalizedPropertyPlantAndEquipment0.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Accumulated
Period End2020-12-312018-12-312017-12-31
Value404824152184
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment72.671.171.6
Percentage of Assets2.61.63.5
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.0

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value503495495493496498735734737743136482427
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:Evernorth


Amortization
Period End2021-06-302021-03-312020-06-302020-03-31
Value488477481479
Percentage of AmortizationOfIntangibleAssets97.096.497.096.2
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:OperatingSegments ci:Evernorth0.00.00.00.0

us-gaap:OperatingSegments, ci:GroupDisabilityAndOther


Amortization
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.02.01.00.02.02.01.01.01.02.01.0
Percentage of AmortizationOfIntangibleAssets0.00.00.40.20.00.30.30.10.72.18.33.7
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:OperatingSegments ci:GroupDisabilityAndOther0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, ci:HealthServices


Amortization
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4794814797097087097131130.00.00.0
Percentage of AmortizationOfIntangibleAssets97.297.096.296.596.596.296.083.10.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:OperatingSegments ci:HealthServices0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, ci:IntegratedMedical


Amortization
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.06.0111815181817421822
Percentage of AmortizationOfIntangibleAssets1.21.22.22.42.02.42.412.587.575.081.5
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:OperatingSegments ci:IntegratedMedical0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, ci:InternationalMarkets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9.010.0118.07.07.08.09.08.0115.05.04.04.0
Percentage of AmortizationOfIntangibleAssets1.82.02.21.61.41.41.11.21.11.53.710.416.714.8
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:OperatingSegments ci:InternationalMarkets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, ci:USMedical


Amortization
Period End2021-06-302021-03-312020-06-302020-03-31
Value6.08.06.011
Percentage of AmortizationOfIntangibleAssets1.21.61.22.2
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:OperatingSegments ci:USMedical0.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4205441744484538452345621563
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.82.92.92.93.02.5

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType

ci:AssetsHeldUnderCapitalLeasesAndOtherCapitalizedPropertyPlantAndEquipment


Property
Period End2020-12-312018-12-312017-12-31
Value11921283756
Percentage of PropertyPlantAndEquipmentNet28.328.148.4
Percentage of Assets0.80.81.2
Percentage of Assets ci:AssetsHeldUnderCapitalLeasesAndOtherCapitalizedPropertyPlantAndEquipment0.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2020-12-312018-12-312017-12-31
Value30133279807
Percentage of PropertyPlantAndEquipmentNet71.771.951.6
Percentage of Assets1.92.11.3
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.0

Long Term Investments

us-gaap:LongTermInvestments

us-gaap:LongTermInvestments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value236222282123262219522133820608215422890428180272572692926483
Percentage of LongTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.315.015.013.713.413.313.818.718.317.717.642.9

us-gaap:LongTermInvestments us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, ci:SecuritiesLimitedPartnershipsAndRealEstateLimitedPartnerships


Long
Period End2020-12-31
Value2100
Percentage of LongTermInvestments9.0
Percentage of Assets1.4
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary ci:SecuritiesLimitedPartnershipsAndRealEstateLimitedPartnerships0.0

us-gaap:LongTermInvestments us-gaap:FinancialInstrument, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

ci:SecuritiesLimitedPartnershipsAndRealEstateLimitedPartnerships, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Long
Period End2020-09-302020-06-30
Value20001900
Percentage of LongTermInvestments9.18.9
Percentage of Assets1.21.2
Percentage of Assets ci:SecuritiesLimitedPartnershipsAndRealEstateLimitedPartnerships us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.0

us-gaap:LongTermInvestments us-gaap:InvestmentType

us-gaap:DebtSecurities


Long
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-31
Value17258167431717223036224742180621608
Percentage of LongTermInvestments73.173.473.879.779.880.080.2
Percentage of Assets11.211.011.014.914.614.114.1
Percentage of Assets us-gaap:DebtSecurities0.00.00.00.00.00.00.0

us-gaap:EquitySecurities


Long
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value530550501288245210171182
Percentage of LongTermInvestments2.22.42.21.00.90.80.60.7
Percentage of Assets0.30.40.30.20.20.10.10.3
Percentage of Assets us-gaap:EquitySecurities0.00.00.00.00.00.00.00.0

us-gaap:Mortgages


Long
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value13991287140618651852183218261746
Percentage of LongTermInvestments5.95.66.06.56.66.76.86.6
Percentage of Assets0.90.80.91.21.21.21.22.8
Percentage of Assets us-gaap:Mortgages0.00.00.00.00.00.00.00.0

us-gaap:OtherLongTermInvestments


Long
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value30942897283223632207200619011518
Percentage of LongTermInvestments13.112.712.28.27.87.47.15.7
Percentage of Assets2.01.91.81.51.41.31.22.5
Percentage of Assets us-gaap:OtherLongTermInvestments0.00.00.00.00.00.00.00.0

us-gaap:PolicyLoans


Long
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value13411344135113521402140314231415
Percentage of LongTermInvestments5.75.95.84.75.05.15.35.3
Percentage of Assets0.90.90.90.90.90.90.92.3
Percentage of Assets us-gaap:PolicyLoans0.00.00.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value460634463544648446854459044584446024446244449445374450561645980
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets29.929.328.727.927.928.828.628.728.828.929.010.00.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

ci:MDLIVEInc


Goodwillus-gaap:
Period End2021-04-19
Value1437
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets ci:MDLIVEInc0.0

us-gaap:Goodwill us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

ci:MDLIVEInc, ci:Evernorth


Goodwillus-gaap:
Period End2021-04-19
Value1300
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets ci:MDLIVEInc ci:Evernorth0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

ci:Evernorth


Goodwillus-gaap:
Period End2020-12-31
Value33799
Percentage of Goodwill75.7
Percentage of Assets21.7
Percentage of Assets ci:Evernorth0.0

ci:InternationalMarkets


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-31
Value400400300
Percentage of Goodwill0.90.90.7
Percentage of Assets0.30.30.2
Percentage of Assets ci:InternationalMarkets0.00.00.0

ci:USMedical


Goodwillus-gaap:
Period End2020-12-31
Value10400
Percentage of Goodwill23.3
Percentage of Assets6.7
Percentage of Assets ci:USMedical0.0

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill


Indefinite
Period End2020-12-312019-12-312018-12-31
Value850084008400
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0
Percentage of Assets5.55.45.5

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:TradeNames


Indefinite
Period End2020-12-312019-12-312018-12-31
Value840084000008400000
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill98.8100000.0100000.0
Percentage of Assets5.45392.45482.1
Percentage of Assets us-gaap:TradeNames0.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value3500734792351793549235791361623656237084377173833839003345
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.722.922.622.222.423.423.523.924.424.825.50.6

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

ci:MDLIVEInc, us-gaap:CustomerRelationships


Intangible
Period End2021-04-19
Value577
Percentage of IntangibleAssetsNetExcludingGoodwill0.0
Percentage of Assets0.0
Percentage of Assets ci:MDLIVEInc us-gaap:CustomerRelationships0.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value264082786530238224
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0
Percentage of Assets17.017.919.70.4
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.0

us-gaap:OtherIntangibleAssets


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value371297365121
Percentage of FiniteLivedIntangibleAssetsNet1.41.11.254.0
Percentage of Assets0.20.20.20.2
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value508534552530544514536
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.40.40.30.30.30.3

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value265425512687248025292517228323792318227616301431
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.71.71.51.61.61.51.51.51.51.12.3

us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-31
Value221948
Percentage of OtherAssetsNoncurrent0.80.82.9
Percentage of Assets0.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.1

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-03-312020-12-312018-12-31
Value211202415
Percentage of EquitySecuritiesFvNi100.0100.0100.0
Percentage of Assets0.10.10.3

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Equity
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value5056507.08.08.0384412
Percentage of EquitySecuritiesFvNi0.026.524.80.00.00.092.50.0
Percentage of Assets0.00.00.00.00.00.00.30.7
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Equity
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1661651657951494373
Percentage of EquitySecuritiesFvNi0.078.281.70.00.00.010.40.0
Percentage of Assets0.10.10.10.10.00.00.00.1
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Equity
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value31313132323232103
Percentage of EquitySecuritiesFvNi0.014.715.30.00.00.07.70.0
Percentage of Assets0.00.00.00.00.00.00.00.2
Percentage of Assets us-gaap:FairValueInputsLevel3 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Equity
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2472522461189189459588
Percentage of EquitySecuritiesFvNi0.0119.4121.80.00.00.0110.60.0
Percentage of Assets0.20.20.20.10.10.10.31.0
Percentage of Assets us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value56475640547853275413558550904502451744884366184
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.73.73.53.33.43.63.32.92.92.92.80.3

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1532404337464494750434055144712231029152955240
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.00.32.24.03.02.83.53.01.51.91.90.4

us-gaap:DebtCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Debt
Period End2020-12-312019-12-312018-12-31
Value327840430.0
Percentage of DebtCurrent97.273.30.0
Percentage of Assets2.12.60.0
Percentage of Assets srt:ParentCompany4.05.00.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value347113347036022438864217940380401383444731867329693189511009
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.522.023.227.426.426.125.822.220.621.420.817.8

us-gaap:LiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-31
Value38944500418
Percentage of LiabilitiesCurrent10.811.21.3
Percentage of Assets2.52.90.3
Percentage of Assets srt:ParentCompany4.85.50.6

Long Term Debt Current

us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument

us-gaap:LongTermDebtCurrent

ci:NotesDue202026Interest


Long
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value5004984974960.0
Percentage of LongTermDebtCurrent100.0100.0100.0100.00.0
Percentage of Assets0.30.30.30.30.0
Percentage of Assets ci:NotesDue202026Interest0.00.00.00.00.0

ci:NotesDue20204375Interest


Long
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value2502502492490.0
Percentage of LongTermDebtCurrent50.050.250.150.20.0
Percentage of Assets0.20.20.20.20.0
Percentage of Assets ci:NotesDue20204375Interest0.00.00.00.00.0

ci:NotesDue2020FloatingRateInterestExpressScripts


Long
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value4004004004000.0
Percentage of LongTermDebtCurrent80.080.380.580.60.0
Percentage of Assets0.20.30.30.30.0
Percentage of Assets ci:NotesDue2020FloatingRateInterestExpressScripts0.00.00.00.00.0

ci:NotesDue202134Interest


Long
Period End2020-12-312020-09-30
Value12491248
Percentage of LongTermDebtCurrent0.0249.6
Percentage of Assets0.80.8
Percentage of Assets ci:NotesDue202134Interest0.00.0

ci:NotesDue2021637Interest


Long
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value787878780.0
Percentage of LongTermDebtCurrent0.00.015.615.70.0
Percentage of Assets0.10.10.00.00.0
Percentage of Assets ci:NotesDue2021637Interest0.00.00.00.00.0

ci:NotesDue202239Interest


Long
Period End2021-03-31
Value181
Percentage of LongTermDebtCurrent0.0
Percentage of Assets0.1
Percentage of Assets ci:NotesDue202239Interest0.0

ci:NotesDue20224Interest


Long
Period End2021-03-31
Value120
Percentage of LongTermDebtCurrent0.0
Percentage of Assets0.1
Percentage of Assets ci:NotesDue20224Interest0.0

ci:NotesDueMarch12021FloatingRateInterest


Long
Period End2020-09-302020-06-302019-12-31
Value139913980.0
Percentage of LongTermDebtCurrent279.8280.70.0
Percentage of Assets0.90.90.0
Percentage of Assets ci:NotesDueMarch12021FloatingRateInterest0.00.00.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value149152152160158165166
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.1

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities

us-gaap:OtherLiabilitiesCurrent

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-31
Value616457418
Percentage of OtherLiabilitiesCurrent100.0100.0100.0
Percentage of Assets0.40.30.3
Percentage of Assets srt:ParentCompany0.80.60.6

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument

us-gaap:LongTermDebtNoncurrent

ci:NotesDue2022305Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value493491490489488487485485483482481
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.30.30.30.30.3
Percentage of Assets ci:NotesDue2022305Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue202239Interest


Long
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value972972972972999999999998998
Percentage of LongTermDebtNoncurrent198.4198.8199.2199.6206.0206.0206.8207.1207.5
Percentage of Assets0.60.60.60.60.60.60.60.60.7
Percentage of Assets ci:NotesDue202239Interest0.00.00.00.00.00.00.00.00.0

ci:NotesDue20224Interest


Long
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value276276276276747747746746746
Percentage of LongTermDebtNoncurrent56.356.456.656.7154.0154.0154.5154.8155.1
Percentage of Assets0.20.20.20.20.50.50.50.50.5
Percentage of Assets ci:NotesDue20224Interest0.00.00.00.00.00.00.00.00.0

ci:NotesDue2023375Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value11841184218121802180217930883087308730853085
Percentage of LongTermDebtNoncurrent240.2241.1445.1445.8446.7447.4636.7636.5639.1640.0641.4
Percentage of Assets0.80.81.41.41.41.42.02.02.02.02.0
Percentage of Assets ci:NotesDue2023375Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue20233Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value980978975973971969966965963961959
Percentage of LongTermDebtNoncurrent198.8199.2199.0199.0199.0199.0199.2199.0199.4199.4199.4
Percentage of Assets0.60.60.60.60.60.60.60.60.60.60.6
Percentage of Assets ci:NotesDue20233Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue2023765Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value636363636363100100100100100
Percentage of LongTermDebtNoncurrent12.812.812.912.912.912.920.620.620.720.720.8
Percentage of Assets0.00.00.00.00.00.00.10.10.10.10.1
Percentage of Assets ci:NotesDue2023765Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue2023FloatingRateInterest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value699698698698698698698698697697697
Percentage of LongTermDebtNoncurrent141.8142.2142.4142.7143.0143.3143.9143.9144.3144.6144.9
Percentage of Assets0.50.50.40.40.40.50.40.50.50.50.5
Percentage of Assets ci:NotesDue2023FloatingRateInterest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue202435Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value980979977976974973970970969968966
Percentage of LongTermDebtNoncurrent198.8199.4199.4199.6199.6199.8200.0200.0200.6200.8200.8
Percentage of Assets0.60.60.60.60.60.60.60.60.60.60.6
Percentage of Assets ci:NotesDue202435Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue2025325Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value896896896896895895895895895895895
Percentage of LongTermDebtNoncurrent181.7182.5182.9183.2183.4183.8184.5184.5185.3185.7186.1
Percentage of Assets0.60.60.60.60.60.60.60.60.60.60.6
Percentage of Assets ci:NotesDue2025325Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue20254125Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value21922191219121892189218921882188218821872187
Percentage of LongTermDebtNoncurrent444.6446.2447.1447.6448.6449.5451.1451.1453.0453.7454.7
Percentage of Assets1.41.41.41.41.41.41.41.41.41.41.4
Percentage of Assets ci:NotesDue20254125Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue202645Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value15041504150515051505150515061507150715071508
Percentage of LongTermDebtNoncurrent305.1306.3307.1307.8308.4309.0310.5310.7312.0312.7313.5
Percentage of Assets1.01.01.00.90.91.01.01.01.01.01.0
Percentage of Assets ci:NotesDue202645Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue2027305


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value596595595595595595595595595595595
Percentage of LongTermDebtNoncurrent120.9121.2121.4121.7121.9122.2122.7122.7123.2123.4123.7
Percentage of Assets0.40.40.40.40.40.40.40.40.40.40.4
Percentage of Assets ci:NotesDue20273050.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue202734Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value14161413141014061404140013961396139213901386
Percentage of LongTermDebtNoncurrent287.2287.8287.8287.5287.7287.5287.8287.8288.2288.4288.1
Percentage of Assets0.90.90.90.90.90.90.90.90.90.90.9
Percentage of Assets ci:NotesDue202734Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue20284375Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value37813781378037793778377737763775377537743774
Percentage of LongTermDebtNoncurrent766.9770.1771.4772.8774.2775.6778.6778.4781.6783.0784.6
Percentage of Assets2.52.52.42.42.42.42.42.42.42.42.5
Percentage of Assets ci:NotesDue20284375Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue203024Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1490149014891489148914880.0
Percentage of LongTermDebtNoncurrent302.2303.5303.9304.5305.1305.50.0
Percentage of Assets1.01.01.00.90.91.00.0
Percentage of Assets ci:NotesDue203024Interest0.00.00.00.00.00.00.0

ci:NotesDue20312375Interest


Long
Period End2021-06-302021-03-31
Value15071489
Percentage of LongTermDebtNoncurrent305.7303.3
Percentage of Assets1.01.0
Percentage of Assets ci:NotesDue20312375Interest0.00.0

ci:NotesDue203848Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value21912180218021802179217921782178217821782178
Percentage of LongTermDebtNoncurrent444.4444.0444.9445.8446.5447.4449.1449.1450.9451.9452.8
Percentage of Assets1.41.41.41.41.41.41.41.41.41.41.4
Percentage of Assets ci:NotesDue203848Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue204032Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value7437427427427427420.0
Percentage of LongTermDebtNoncurrent150.7151.1151.4151.7152.0152.40.0
Percentage of Assets0.50.50.50.50.50.50.0
Percentage of Assets ci:NotesDue204032Interest0.00.00.00.00.00.00.0

ci:NotesDue20416125Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value490490490490490490491492492493493
Percentage of LongTermDebtNoncurrent99.499.8100.0100.2100.4100.6101.2101.4101.9102.3102.5
Percentage of Assets0.30.30.30.30.30.30.30.30.30.30.3
Percentage of Assets ci:NotesDue20416125Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue204648Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value14651465146514651464146414651465146514651465
Percentage of LongTermDebtNoncurrent297.2298.4299.0299.6300.0300.6302.1302.1303.3303.9304.6
Percentage of Assets1.01.00.90.90.90.90.90.90.90.91.0
Percentage of Assets ci:NotesDue204648Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue204849Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value29672966296629662965296529642964296429642964
Percentage of LongTermDebtNoncurrent601.8604.1605.3606.5607.6608.8611.1611.1613.7614.9616.2
Percentage of Assets1.92.01.91.91.91.91.91.91.91.91.9
Percentage of Assets ci:NotesDue204849Interest0.00.00.00.00.00.00.00.00.00.00.0

ci:NotesDue205034Interest


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1235123512351235123512350.0
Percentage of LongTermDebtNoncurrent250.5251.5252.0252.6253.1253.60.0
Percentage of Assets0.80.80.80.80.80.80.0
Percentage of Assets ci:NotesDue205034Interest0.00.00.00.00.00.00.0

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value31606315682954529537317743214731893340413688537571395235199
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.520.819.018.519.920.820.522.023.924.325.88.4

us-gaap:LongTermDebtAndCapitalLeaseObligations us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-31
Value277182936522863
Percentage of LongTermDebtAndCapitalLeaseObligations93.892.157.8
Percentage of Assets17.818.914.9
Percentage of Assets srt:ParentCompany33.836.033.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value88678832893991429170906693879453
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.85.85.85.75.75.96.06.2

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value962855560
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0
Percentage of Assets0.60.50.4
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7000000.06000000.07000000.07000000.05000000.07000000.06000000.03000000.03000000.05000000.07000000.00
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value433044854629455247754519446039193930383234702838
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.82.93.02.83.02.92.92.52.52.52.34.6

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value449480491461482445465
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.3

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value170
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value118
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value89
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value57
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value121
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.1

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value598632643621640610631657675
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.40.40.40.40.4

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value705
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets0.5

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value62
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value487094814950321480324736645079453384469643815424084102813711
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.631.732.430.029.729.129.128.928.427.526.822.2

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-31
Value503214533841028
Percentage of StockholdersEquity100.0100.0100.0
Percentage of Assets32.429.126.8
Percentage of Assets srt:ParentCompany61.455.659.2

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13761256547975102680346018
Percentage of StockholdersEquity2.92.71.22.22.31.81.10.0
Percentage of Assets0.90.80.40.60.70.50.30.0
Percentage of Assets ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-1656.0-1670.0-1628.0-1641.0-1471.0-1483.0-1497.0-1508.0
Percentage of StockholdersEquity-3.4-3.5-3.6-3.6-3.3-3.4-3.5-3.7
Percentage of Assets-1.0-1.0-1.1-1.1-0.9-1.0-1.0-1.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-261.0-374.0-446.0-275.0-413.0-285.0-245.0-221.0
Percentage of StockholdersEquity-0.5-0.8-1.0-0.6-0.9-0.7-0.6-0.5
Percentage of Assets-0.2-0.2-0.3-0.2-0.3-0.2-0.2-0.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value4871648155503284803947371450864534444699438184241341035155551474314195137111370312020
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.631.732.430.029.729.129.128.928.427.526.80.00.00.022.20.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value749627900125654797518328
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest1.51.31.82.71.22.20.02.4
Percentage of Assets0.50.40.60.80.40.60.00.5
Percentage of Assets ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value-1713.0-1728.0-1746.0-1670.0-1628.0-1641.0-1508.0-1345.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-3.5-3.6-3.5-3.5-3.6-3.6-3.7-9.8
Percentage of Assets-1.1-1.1-1.1-1.0-1.1-1.1-1.0-2.2
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value-1077.0-1231.0-861.0-541.0-788.0-1527.0-941.0-858.0-965.0-1282.0-1711.0-1857.0-1843.0-1547.0-1082.0-1382.0-1250.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.2-2.6-1.7-1.1-1.7-3.4-2.1-1.9-2.2-3.0-4.2-11.9-12.5-10.9-7.9-10.1-10.4
Percentage of Assets-0.7-0.8-0.6-0.3-0.5-1.0-0.6-0.6-0.6-0.8-1.10.00.00.0-1.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value-113.0-130.0-15.0-374.0-446.0-275.0-221.0-65.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.2-0.3-0.0-0.8-1.0-0.6-0.5-0.5
Percentage of Assets-0.1-0.1-0.0-0.2-0.3-0.2-0.1-0.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value2940329254289752877728699285542830628115278912785527751298529742963294028922859
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest60.460.757.659.960.663.362.462.963.765.767.619.220.220.921.421.123.8
Percentage of Assets19.119.218.618.018.018.518.218.218.118.018.10.00.00.04.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value4.04.04.04.04.04.04.04.04.04.04.0747474747474
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.50.50.50.50.50.6
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value7.06.07.07.05.07.06.03.03.05.07.00.00.00.00.04.09.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value4870948149503214803247366450794533844696438154240841028155551474314195137111369912011
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.9
Percentage of Assets31.631.732.430.029.729.129.128.928.427.526.80.00.00.022.20.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value3051329389285752444023052212982016219185178341642615088184741772216933158001383112097
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest62.661.056.850.948.747.244.542.940.738.736.8118.8120.2119.3115.2100.9100.6
Percentage of Assets19.819.318.415.314.413.812.912.411.610.69.80.00.00.025.60.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value-10134.0-9267.0-6372.0-4648.0-3601.0-3250.0-2193.0-1750.0-949.0-595.0-104.0-4121.0-4184.0-4228.0-4021.0-1716.0-1769.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-20.8-19.2-12.7-9.7-7.6-7.2-4.8-3.9-2.2-1.4-0.3-26.5-28.4-29.8-29.3-12.5-14.7
Percentage of Assets-6.6-6.1-4.1-2.9-2.3-2.1-1.4-1.1-0.6-0.4-0.10.00.00.0-6.50.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4.04.04.04.04.04.04.04.04.04.04.074
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.1

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value29403292542897528777286992855428306281152789127855277512940
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.119.218.618.018.018.518.218.218.118.018.14.8

us-gaap:AdditionalPaidInCapitalCommonStock us-gaap:ConsolidatedEntities

srt:ParentCompany


Additional
Period End2020-12-312019-12-312018-12-31
Value289752830627751
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0
Percentage of Assets18.618.218.1
Percentage of Assets srt:ParentCompany35.434.740.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value305132938928575244402305221298201621918517834164261508815800
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.819.318.415.314.413.812.912.411.610.69.825.6

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities

srt:ParentCompany


Retained
Period End2020-12-312019-12-312018-12-31
Value285752016215088
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0
Percentage of Assets18.412.99.8
Percentage of Assets srt:ParentCompany34.924.721.8

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-1077.0-1231.0-861.0-541.0-788.0-1527.0-941.0-858.0-965.0-1282.0-1711.0-1082.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.7-0.8-0.6-0.3-0.5-1.0-0.6-0.6-0.6-0.8-1.1-1.8

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities

srt:ParentCompany


Accumulated
Period End2020-12-312019-12-312018-12-31
Value-861.0-941.0-1711.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0
Percentage of Assets-0.6-0.6-1.1
Percentage of Assets srt:ParentCompany-1.1-1.2-2.5

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1013492676372464836013250219317509495951044021
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.66.14.12.92.32.11.41.10.60.40.16.5

us-gaap:TreasuryStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Treasury
Period End2020-12-312019-12-312018-12-31
Value63722193104
Percentage of TreasuryStockValue100.0100.0100.0
Percentage of Assets4.11.40.1
Percentage of Assets srt:ParentCompany7.82.70.2

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7000000.06000000.07000000.07000000.05000000.07000000.06000000.03000000.03000000.05000000.07000000.00
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-296.0109342948953274188727932461103931921266249952025
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.72.710.32.28.34.97.36.42.78.40.95.48.717.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2307.0-717.04420-938.0-237.0-269.0-271.0-304.0-634.0475-24704.0125-99.0-1700.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-5.3-1.810.6-2.3-0.6-0.7-0.7-0.8-1.61.3-172.81.1-0.9-14.9

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-62.0-4051.0-4721.0-1682.0-312.0-1818.0-1707.0-1173.0-1773.0-2534.0440019657-12.0-530.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.1-9.9-11.3-4.1-0.8-4.7-4.5-3.0-4.6-6.730.8171.6-0.1-4.6

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2666.0-3701.04041-1717.02747-237.0834967-1366.01121-20177.020398863-201.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-6.2-9.09.7-4.27.0-0.62.22.5-3.53.0-141.1178.07.5-1.8

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value731715713702694693927913914897257162136140
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value123-247.0509-55.0146-96.0512-137.0-84.0-440.019131-21.0-94.0
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-104.0-84.0-129.0-81.0-243.0-144.0-302.0-68.0-106.0-83.0-213.0-21.0-46.08.0
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-296.0109342948953274188727932461103931921266249952025
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.72.710.32.28.34.97.36.42.78.40.95.48.717.7

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value147611714142139817601189984135414101372147774808917
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3.42.99.93.44.53.12.63.53.63.61.06.87.08.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2307.0-717.04420-938.0-237.0-269.0-271.0-304.0-634.0475-24704.0125-99.0-1700.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-5.3-1.810.6-2.3-0.6-0.7-0.7-0.8-1.61.3-172.81.1-0.9-14.9

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-62.0-4051.0-4721.0-1682.0-312.0-1818.0-1707.0-1173.0-1773.0-2534.0440019657-12.0-530.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.1-9.9-11.3-4.1-0.8-4.7-4.5-3.0-4.6-6.730.8171.6-0.1-4.6

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-2.042620.00.0-5.034700.00.00.00.0297220000
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.00.00.0100.0100.00.00.00.00.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value37941991150209958942091151600174010000.00.00.0131250
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-31
Value342345
Percentage of PaymentsOfDividendsCommonStock100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value916279416901028368956447674404462320.00.0310
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.222.61.120.60.0510.14900.006-0.0180.2330.006-0.0010.0090.247
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value9.74211126.1567.0976.433
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value152.4136.19125.46100.7982.0168.86
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value8939938710867823
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value129212581414862
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value12101018928353131
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value20719619972
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0

ci:AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

ci:AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2333214216382112282322352096224720551964877125412761336
Percentage of AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

ci:CorporateAndEliminations


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-344.0-354.0-381.0-366.0-400.0-405.0-439.0-442.0-453.0-490.0-148.0-83.0-80.0-92.0
Percentage of AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-14.7-16.5-23.3-17.3-14.2-18.1-20.9-19.7-22.0-24.9-16.9-6.6-6.3-6.9

ci:AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:Evernorth


Adjusted
Period End2021-06-302021-03-312020-06-302020-03-31
Value1413122312491082
Percentage of AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest60.657.144.248.4

us-gaap:OperatingSegments, ci:GroupDisabilityAndOther


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value132411701327712514314984109143161116
Percentage of AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest0.61.10.73.34.73.46.06.47.34.312.411.412.68.7

us-gaap:OperatingSegments, ci:HealthServices


Adjusted
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value144312491082153713991162994153677783
Percentage of AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest68.344.248.473.362.356.550.617.45.36.06.2

us-gaap:OperatingSegments, ci:IntegratedMedical


Adjusted
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7571523119971895399011706439329151012
Percentage of AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest35.853.953.634.342.448.259.673.374.371.775.7

us-gaap:OperatingSegments, ci:InternationalMarkets


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value23426291208319282155194207206120195203217
Percentage of AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest10.012.25.69.811.312.67.48.610.110.513.715.615.916.2

us-gaap:OperatingSegments, ci:USMedical


Adjusted
Period End2021-06-302021-03-312020-06-302020-03-31
Value101798715231199
Percentage of AdjustedIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest43.646.153.953.6

ci:ComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestIncludingTemporaryEquity

ci:ComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestIncludingTemporaryEquity


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1629797382416412497599899146217251799
Percentage of ComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestIncludingTemporaryEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPreviouslyRecorded

ci:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPreviouslyRecorded


Debt
Period End2021-03-312020-12-312020-09-30
Value2.068-4.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossPreviouslyRecorded100.0100.0100.0

ci:DebtSecuritiesAvailableForSaleAndCommercialMortgageLoansAllowanceForCreditLossExpenseReversal

ci:DebtSecuritiesAvailableForSaleAndCommercialMortgageLoansAllowanceForCreditLossExpenseReversal


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-30
Value1.09.0-14.0-8.0-6.0550.0
Percentage of DebtSecuritiesAvailableForSaleAndCommercialMortgageLoansAllowanceForCreditLossExpenseReversal100.0100.0100.0100.0100.0100.00.0

ci:DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

ci:DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax

us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperations, ci:USGroupDisabilityAndLifeInsuranceBusiness


Disposal
Period End2020-12-31
Value3200
Percentage of DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax100.0

ci:EarningsPerShareEffectOfDilution

ci:EarningsPerShareEffectOfDilution


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.05-0.03-0.1-0.03-0.04-0.04-0.03-0.03-0.03-0.05-0.01-0.04-0.03-0.06
Percentage of EarningsPerShareEffectOfDilution100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossAttributedToInstrumentsHeldIncludedInEarnings us-gaap:FairValueByAssetClass

ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossAttributedToInstrumentsHeldIncludedInEarnings

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1.0-11.0-15.0-1.016-18.00.0-6.0-1.0-1.00.0-1.0-1.0-7.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossAttributedToInstrumentsHeldIncludedInEarnings100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossRequiredToAdjustFuturePolicyBenefits us-gaap:FairValueByAssetClass

ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossRequiredToAdjustFuturePolicyBenefits

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1000000.0-8000000.03000000.07000000.07000000.0-10000000.0-1000000.01000000.002000000.00-2000000.0-2000000.0-4000000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossRequiredToAdjustFuturePolicyBenefits100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0

ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss

ci:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value7.0-16.0311712-66.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0

ci:FinancingReceivableCreditQualityDebtServiceCoverageBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ci:FinancingReceivableCreditQualityDebtServiceCoverageBeforeReclassificationToDisposalGroupAssetsHeldForSale

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan


Financing
Period End2020-09-302020-06-302020-03-31
Value0-0.082.09
Percentage of FinancingReceivableCreditQualityDebtServiceCoverageBeforeReclassificationToDisposalGroupAssetsHeldForSale0.0100.0100.0

ci:FinancingReceivableCreditQualityDebtServiceCoverageBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanToValue

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan, ci:Ltv60To79Percent


Financing
Period End2020-09-302020-06-302020-03-31
Value-0.01-0.041.98
Percentage of FinancingReceivableCreditQualityDebtServiceCoverageBeforeReclassificationToDisposalGroupAssetsHeldForSale0.050.094.7

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan, ci:LtvLessThan60Percent


Financing
Period End2020-09-302020-06-302020-03-31
Value0.02-0.012.19
Percentage of FinancingReceivableCreditQualityDebtServiceCoverageBeforeReclassificationToDisposalGroupAssetsHeldForSale0.012.5104.8

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan, us-gaap:Ltv80To100Percent


Financing
Period End2020-09-302020-06-302020-03-31
Value0-0.291.62
Percentage of FinancingReceivableCreditQualityDebtServiceCoverageBeforeReclassificationToDisposalGroupAssetsHeldForSale0.0362.577.5

ci:FinancingReceivableCreditQualityDebtServiceCoverageRatio us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ci:FinancingReceivableCreditQualityDebtServiceCoverageRatio

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan


Financing
Period End2021-06-302021-03-31
Value-0.152.08
Percentage of FinancingReceivableCreditQualityDebtServiceCoverageRatio100.0100.0

ci:FinancingReceivableCreditQualityDebtServiceCoverageRatio us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanToValue

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan, ci:Ltv60To79Percent


Financing
Period End2021-06-302021-03-31
Value-0.312.11
Percentage of FinancingReceivableCreditQualityDebtServiceCoverageRatio206.7101.4

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan, ci:LtvLessThan60Percent


Financing
Period End2021-06-302021-03-31
Value-0.072.25
Percentage of FinancingReceivableCreditQualityDebtServiceCoverageRatio46.7108.2

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan, us-gaap:Ltv80To100Percent


Financing
Period End2021-06-302021-03-31
Value0.141.33
Percentage of FinancingReceivableCreditQualityDebtServiceCoverageRatio-93.363.9

ci:FinancingReceivableCreditQualityLoanToValueRatio us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ci:FinancingReceivableCreditQualityLoanToValueRatio

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan


Financing
Period End2021-06-302021-03-31
Value-1.061.0
Percentage of FinancingReceivableCreditQualityLoanToValueRatio100.0100.0

ci:FinancingReceivableCreditQualityLoanToValueRatioBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:Range, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ci:FinancingReceivableCreditQualityLoanToValueRatioBeforeReclassificationToDisposalGroupAssetsHeldForSale

srt:WeightedAverage, us-gaap:CommercialPortfolioSegment, us-gaap:RealEstateLoan


Financing
Period End2020-09-302020-06-302020-03-31
Value59.40.020.58
Percentage of FinancingReceivableCreditQualityLoanToValueRatioBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0

ci:GainLossOnExtinguishmentOfDebtNetOfTax

ci:GainLossOnExtinguishmentOfDebtNetOfTax


Gain
Period End2021-06-302021-03-312020-04-30
Value-110000000.0-101000000.0-151000000.0
Percentage of GainLossOnExtinguishmentOfDebtNetOfTax100.0100.0100.0

ci:GuaranteedMinimumDeathBenefitsTotalContractholders us-gaap:ProductOrService, us-gaap:GuaranteedInsuranceContractTypeOfBenefit

ci:GuaranteedMinimumDeathBenefitsTotalContractholders

us-gaap:VariableAnnuity, us-gaap:GuaranteedMinimumDeathBenefit


Guaranteed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-5000.0180000.0-5000.00-5000.0195000.0-5000.0-5000.0-5000.0215000.0
Percentage of GuaranteedMinimumDeathBenefitsTotalContractholders100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

ci:ImpactOfPriorYearDevelopmentOnPretaxIncome us-gaap:StatementBusinessSegments

ci:ImpactOfPriorYearDevelopmentOnPretaxIncome

ci:IntegratedMedical


Impact
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18.0-22.078-1.08.028508.0182051
Percentage of ImpactOfPriorYearDevelopmentOnPretaxIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:ImpactOfPriorYearDevelopmentOnShareholdersNetIncome us-gaap:StatementBusinessSegments

ci:ImpactOfPriorYearDevelopmentOnShareholdersNetIncome

ci:IntegratedMedical


Impact
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-14.0-18.062-1.06.023397.0141640
Percentage of ImpactOfPriorYearDevelopmentOnShareholdersNetIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:ImpairmentsOnInvestmentsTotal

ci:ImpairmentsOnInvestmentsTotal


Impairments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.01.09.00.09.02.01.0
Percentage of ImpairmentsOnInvestmentsTotal0.00.0100.0100.00.0100.0100.0100.0

ci:IncomeLossAttributableToNoncontrollingInterestBeforeTax

ci:IncomeLossAttributableToNoncontrollingInterestBeforeTax


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value111210.010.08.09.07.04.04.05.04.03.03.04.0
Percentage of IncomeLossAttributableToNoncontrollingInterestBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:IncomeLossAttributableToNoncontrollingInterestBeforeTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:Evernorth


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value6.05.03.04.0
Percentage of IncomeLossAttributableToNoncontrollingInterestBeforeTax54.541.737.544.4

us-gaap:OperatingSegments, ci:HealthServices


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.03.04.03.00.00.01.00.00.00.00.0
Percentage of IncomeLossAttributableToNoncontrollingInterestBeforeTax50.037.544.442.90.00.020.00.00.00.00.0

us-gaap:OperatingSegments, ci:InternationalMarkets


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.07.05.05.05.05.04.04.04.04.04.03.03.04.0
Percentage of IncomeLossAttributableToNoncontrollingInterestBeforeTax45.558.350.050.062.555.657.1100.0100.080.0100.0100.0100.0100.0

ci:IncreaseDecreaseInAccountsPayableAccruedAndOtherOperatingLiabilities

ci:IncreaseDecreaseInAccountsPayableAccruedAndOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1006.0-637.01378-662.03223081320393-461.091155298-314.0193
Percentage of IncreaseDecreaseInAccountsPayableAccruedAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:IncreaseDecreaseInPharmacyAndServiceCostsPayable

ci:IncreaseDecreaseInPharmacyAndServiceCostsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7084158074291247408-402.0-503.0269444-851.06469-124.0
Percentage of IncreaseDecreaseInPharmacyAndServiceCostsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage us-gaap:NoncatastrophicEvent, us-gaap:StatementBusinessSegments

ci:LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage

ci:CompletionFactors, ci:IntegratedMedical


Liability
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.198-0.0010.003000.0020.0020.0010.00100.003
Percentage of LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage100.0100.0100.00.00.0100.0100.0100.0100.00.0100.0

ci:CompletionFactors, ci:USMedical


Liability
Period End2021-06-302021-03-312020-06-302020-03-31
Value00.2-0.10.3
Percentage of LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage0.00.010000.010000.0

ci:MedicalCostTrend, ci:IntegratedMedical


Liability
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.29700.0030.001000.003000.0010.003
Percentage of LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage150.0-0.0100.00.00.00.0150.00.00.00.0100.0

ci:MedicalCostTrend, ci:USMedical


Liability
Period End2021-06-302021-03-312020-06-302020-03-31
Value00.500.3
Percentage of LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage0.00.0-0.010000.0

ci:LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage us-gaap:StatementBusinessSegments

ci:IntegratedMedical


Liability
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.495-0.0010.0060.00100.0020.0050.0010.0010.0010.006
Percentage of LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage250.0100.0200.00.00.0100.0250.0100.0100.00.0200.0

ci:USMedical


Liability
Period End2021-06-302021-03-312020-06-302020-03-31
Value00.7-0.10.6
Percentage of LiabilityForUnpaidMedicalClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsPercentage0.00.010000.020000.0

ci:NonInvestmentRevenue

ci:NonInvestmentRevenue


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4282140580413414065839042381163789038207384793760013856111021112811084
Percentage of NonInvestmentRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:NonInvestmentRevenue us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1629.0-1708.0-1405.0-1410.0-1395.0-1445.0-969.0-882.0-829.0-906.0-469.0-433.0-416.0-423.0
Percentage of NonInvestmentRevenue-3.8-4.2-3.4-3.5-3.6-3.8-2.6-2.3-2.2-2.4-3.4-3.9-3.7-3.8

ci:NonInvestmentRevenue us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IntersegmentElimination, ci:Evernorth


Non
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1034.0-1198.0-885.0-974.0
Percentage of NonInvestmentRevenue-2.4-3.0-2.3-2.6

us-gaap:IntersegmentElimination, ci:GroupDisabilityAndOther


Non
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-6.0-6.0-6.05.0-5.0-7.0-7.0-7.0-4.0-4.0-3.0-3.0
Percentage of NonInvestmentRevenue-0.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0

us-gaap:IntersegmentElimination, ci:HealthServices


Non
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-926.0-885.0974-511.0-499.0-633.0-737.0-313.0-279.0-278.0-284.0
Percentage of NonInvestmentRevenue-2.3-2.32.6-1.3-1.3-1.6-2.0-2.3-2.5-2.5-2.6

us-gaap:IntersegmentElimination, ci:IntegratedMedical


Non
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-478.0-504.0466-453.0-376.0-189.0-162.0-152.0-150.0-135.0-136.0
Percentage of NonInvestmentRevenue-1.2-1.31.2-1.2-1.0-0.5-0.4-1.1-1.4-1.2-1.2

us-gaap:IntersegmentElimination, ci:USMedical


Non
Period End2021-06-302021-03-312020-06-302020-03-31
Value-595.0-510.0-504.0-466.0
Percentage of NonInvestmentRevenue-1.4-1.3-1.3-1.2

ci:NonInvestmentRevenue us-gaap:StatementBusinessSegments

ci:Evernorth


Non
Period End2021-06-302021-03-312020-06-302020-03-31
Value31553294192771426256
Percentage of NonInvestmentRevenue73.772.571.068.9

ci:GroupDisabilityAndOther


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5260112411561178117211141107113111091068108210921093
Percentage of NonInvestmentRevenue0.10.12.72.83.03.12.92.92.92.97.79.79.89.9

ci:HealthServices


Non
Period End2020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2901627714267362708427337261973455828833786
Percentage of NonInvestmentRevenue71.471.070.670.971.069.724.97.57.57.1

ci:IntegratedMedical


Non
Period End2020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9047868486358648866889108034790779157903
Percentage of NonInvestmentRevenue22.322.222.822.622.523.758.071.271.171.3

ci:InternationalMarkets


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15271499152814391466142014051368134313841299128512881302
Percentage of NonInvestmentRevenue3.63.73.73.53.83.73.73.63.53.79.411.611.611.7

ci:USMedical


Non
Period End2021-06-302021-03-312020-06-302020-03-31
Value9689960286849268
Percentage of NonInvestmentRevenue22.623.722.224.3

ci:NoncontrollingInterestOtherChanges

ci:NoncontrollingInterestOtherChanges


Noncontrolling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-8.0-6.0-8.0-4.0-4.0-3.0-1.00.0-2.0-3.00.00.00.00.0
Percentage of NoncontrollingInterestOtherChanges100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.00.0

ci:NoncontrollingInterestOtherChanges us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Noncontrolling
Period End2021-06-30
Value-3.0
Percentage of NoncontrollingInterestOtherChanges37.5

us-gaap:NoncontrollingInterest


Noncontrolling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-5.0-6.0-5.0-4.0-4.0-3.0-1.00.0-2.0-3.0
Percentage of NoncontrollingInterestOtherChanges62.5100.062.5100.0100.0100.0100.00.0100.0100.0

us-gaap:Parent


Noncontrolling
Period End2021-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3.00.00.00.00.00.00.00.00.0
Percentage of NoncontrollingInterestOtherChanges37.5-0.00.0-0.0-0.00.00.00.00.0

ci:OrganizationalEfficiencyPlanCharges

ci:OrganizationalEfficiencyPlanCharges


Organizational
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-31
Value0.00.00.0312070.00.0
Percentage of OrganizationalEfficiencyPlanCharges0.00.00.0100.0100.00.00.0

ci:OrganizationalEfficiencyPlanCharges us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Organizational
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.031
Percentage of OrganizationalEfficiencyPlanCharges0.00.00.0100.0

ci:OrganizationalEfficiencyPlanChargesNetOfTax

ci:OrganizationalEfficiencyPlanChargesNetOfTax


Organizational
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.00.0241620.00.00.0
Percentage of OrganizationalEfficiencyPlanChargesNetOfTax0.00.00.0100.0100.00.00.00.0

ci:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAndDerivativesAdjustmentNetOfTax

ci:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAndDerivativesAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value122-273.0-476.0120709-428.0-51.0223343442
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAndDerivativesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:OtherComprehensiveIncomeLossBeforeReclassificationsAfterTaxIncludingTemporaryEquity us-gaap:StatementEquityComponents

ci:OtherComprehensiveIncomeLossBeforeReclassificationsAfterTaxIncludingTemporaryEquity

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-03-312020-03-31
Value-119.0-175.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsAfterTaxIncludingTemporaryEquity100.0100.0

ci:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTaxIncludingTemporaryEquity us-gaap:StatementEquityComponents

ci:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTaxIncludingTemporaryEquity

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value16-114.065-160.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTaxIncludingTemporaryEquity100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value10265-160.0-124.0-42.0-25.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTaxIncludingTemporaryEquity0.0100.0100.00.00.00.0

ci:OtherComprehensiveIncomeLossBeforeReclassificationsTaxIncludingTemporaryEquity us-gaap:StatementEquityComponents

ci:OtherComprehensiveIncomeLossBeforeReclassificationsTaxIncludingTemporaryEquity

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.05.0-5.015
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTaxIncludingTemporaryEquity0.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-7.0-5.0153.00.01.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTaxIncludingTemporaryEquity0.0100.0100.00.00.00.0

ci:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxIncludingTemporaryEquity

ci:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxIncludingTemporaryEquity


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value16-119.024810970-175.0136-127.0-42.0-26.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxIncludingTemporaryEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:OtherComprehensiveIncomeLossNetOfTaxIncludingTemporaryEquity

ci:OtherComprehensiveIncomeLossNetOfTaxIncludingTemporaryEquity


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value153-374.0-318.0243737-590.0-85.0108315427
Percentage of OtherComprehensiveIncomeLossNetOfTaxIncludingTemporaryEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:OtherComprehensiveIncomeLossNetOfTaxIncludingTemporaryEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302020-06-30
Value1670
Percentage of OtherComprehensiveIncomeLossNetOfTaxIncludingTemporaryEquity10.59.5

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value10970-175.0-127.0-42.0-26.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxIncludingTemporaryEquity44.99.529.7-117.6-13.3-6.1

ci:PaymentsForDebtTenderAndRedemption

ci:PaymentsForDebtTenderAndRedemption


Payments
Period End2020-12-31
Value0.0
Percentage of PaymentsForDebtTenderAndRedemption0.0

ci:PaymentsForProceedsFromPropertyPlantAndEquipment

ci:PaymentsForProceedsFromPropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value258242319252256267310243303194
Percentage of PaymentsForProceedsFromPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:PaymentsToAcquireDebtAndEquitySecurities

ci:PaymentsToAcquireDebtAndEquitySecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1019980144811679761174935113511241088
Percentage of PaymentsToAcquireDebtAndEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:ProceedsFromIssuanceOfLongTermDebtNetOfDiscountsAndUnderwritingFees us-gaap:DebtInstrument, us-gaap:LongtermDebtType

ci:ProceedsFromIssuanceOfLongTermDebtNetOfDiscountsAndUnderwritingFees

ci:NotesDue2024613Interest, us-gaap:SeniorNotes


Proceeds
Period End2021-03-03
Value499
Percentage of ProceedsFromIssuanceOfLongTermDebtNetOfDiscountsAndUnderwritingFees100.0

ci:NotesDue2026125, us-gaap:SeniorNotes


Proceeds
Period End2021-03-03
Value797
Percentage of ProceedsFromIssuanceOfLongTermDebtNetOfDiscountsAndUnderwritingFees159.7

ci:NotesDue20312375Interest, us-gaap:SeniorNotes


Proceeds
Period End2021-03-03
Value1492
Percentage of ProceedsFromIssuanceOfLongTermDebtNetOfDiscountsAndUnderwritingFees299.0

ci:NotesDue205134Interest, us-gaap:SeniorNotes


Proceeds
Period End2021-03-03
Value1479
Percentage of ProceedsFromIssuanceOfLongTermDebtNetOfDiscountsAndUnderwritingFees296.4

ci:ProceedsFromMaturitiesPrepaymentsAndCallsOfDebtAndEquitySecurities

ci:ProceedsFromMaturitiesPrepaymentsAndCallsOfDebtAndEquitySecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value344328422332357408544543419319757507590297
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfDebtAndEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:ProceedsFromRepaymentsOfOtherShortTermDebt

ci:ProceedsFromRepaymentsOfOtherShortTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1502-1030.0-532.01545-773.0-180.0-202.0142
Percentage of ProceedsFromRepaymentsOfOtherShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0

ci:ProceedsFromSaleOfDebtAndEquitySecurities

ci:ProceedsFromSaleOfDebtAndEquitySecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4743782454008827568486035651471725657774499
Percentage of ProceedsFromSaleOfDebtAndEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:RealizedInvestmentGainLoss

ci:RealizedInvestmentGainLoss


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value591.01673238-88.093512310.0-45.00.0-3.0-33.0
Percentage of RealizedInvestmentGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

ci:RealizedInvestmentGainLossExcludingImpairments

ci:RealizedInvestmentGainLossExcludingImpairments


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6010.01532433-24.093602511-21.00.03.0-16.0
Percentage of RealizedInvestmentGainLossExcludingImpairments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

ci:RealizedInvestmentGainLossIncludingEquityMethodSubsidiaries

ci:RealizedInvestmentGainLossIncludingEquityMethodSubsidiaries


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value83-13.02106998-98.0110561738-65.0-1.0-23.0-35.0
Percentage of RealizedInvestmentGainLossIncludingEquityMethodSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:RealizedInvestmentGainLossIncludingEquityMethodSubsidiaries us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:GroupDisabilityAndOther


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.0-8.02.027-1.0-4.030188.010.0-11.0-5.03.0-12.0
Percentage of RealizedInvestmentGainLossIncludingEquityMethodSubsidiaries7.261.51.039.1-1.04.127.332.147.126.316.9500.0-13.034.3

us-gaap:OperatingSegments, ci:IntegratedMedical


Realized
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-6.026-48.04743175.0-24.03.03.0-18.0
Percentage of RealizedInvestmentGainLossIncludingEquityMethodSubsidiaries-8.726.549.042.776.8100.013.236.9-300.0-13.051.4

us-gaap:OperatingSegments, ci:InternationalMarkets


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value30-33.0864873-46.033-5.0-8.023-29.01.0-29.0-4.0
Percentage of RealizedInvestmentGainLossIncludingEquityMethodSubsidiaries36.1253.841.069.674.546.930.0-8.9-47.160.544.6-100.0126.111.4

us-gaap:OperatingSegments, ci:USMedical


Realized
Period End2021-06-302021-03-312020-06-302020-03-31
Value493026-48.0
Percentage of RealizedInvestmentGainLossIncludingEquityMethodSubsidiaries59.0-230.826.549.0

ci:RealizedInvestmentGainsLossesEquityMethodInvestments

ci:RealizedInvestmentGainsLossesEquityMethodInvestments


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value24-14.0433760-10.0175.0-6.028-20.0-1.0-20.0-2.0
Percentage of RealizedInvestmentGainsLossesEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:RealizedInvestmentGainsLossesEquityMethodInvestments us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:InternationalMarkets


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value24-14.0433760-10.0175.0-6.028-20.0-1.0-20.0-2.0
Percentage of RealizedInvestmentGainsLossesEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:SegmentRevenues

ci:SegmentRevenues


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value43107409854166940801392053839236538358333437533429-82471.0114451150011415
Percentage of SegmentRevenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:SegmentRevenues us-gaap:ConsolidationItems

ci:CorporateAndEliminations


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1628.0-1708.0-1407.0-1409.0-1394.0-1445.0-963.0-881.0-828.0-916.0-460.0-426.0-409.0-418.0
Percentage of SegmentRevenues-3.8-4.2-3.4-3.5-3.6-3.8-2.6-2.5-2.4-2.70.6-3.7-3.6-3.7

ci:SegmentRevenues us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:Evernorth


Segment
Period End2021-06-302021-03-312020-06-302020-03-31
Value32592306202860227168
Percentage of SegmentRevenues75.674.773.070.8

us-gaap:OperatingSegments, ci:GroupDisabilityAndOther


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value129139128313141328133912931284130912961246126212821271
Percentage of SegmentRevenues0.30.33.13.23.43.53.53.63.83.9-1.511.011.111.1

us-gaap:OperatingSegments, ci:HealthServices


Segment
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value298272860227168255702488023537224603313110911131071
Percentage of SegmentRevenues73.173.070.870.069.468.567.2-4.09.79.79.4

us-gaap:OperatingSegments, ci:IntegratedMedical


Segment
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value96299237986092089148896891958297817481708150
Percentage of SegmentRevenues23.623.625.725.225.526.127.5-10.171.471.071.4

us-gaap:OperatingSegments, ci:InternationalMarkets


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15581572153514401432147014301402138913941355132613441341
Percentage of SegmentRevenues3.63.83.73.53.73.83.93.94.04.2-1.611.611.711.7

us-gaap:OperatingSegments, ci:USMedical


Segment
Period End2021-06-302021-03-312020-06-302020-03-31
Value104561036292379860
Percentage of SegmentRevenues24.325.323.625.7

ci:SpecialItemChargeAfterTaxLitigation

ci:SpecialItemChargeAfterTaxLitigation


Special
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0-21.00.00.00.0190.0-23.0640.0-16.0350.00.0
Percentage of SpecialItemChargeAfterTaxLitigation0.0100.00.00.00.0100.00.0100.0100.00.0100.0100.00.00.0

ci:SpecialItemChargeBeforetaxLitigation

ci:SpecialItemChargeBeforetaxLitigation


Special
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.0-27.00.00.00.0250.0-30.0810.0-20.0450.0
Percentage of SpecialItemChargeBeforetaxLitigation0.0100.00.00.00.0100.00.0100.0100.00.0100.0100.00.0

ci:SpecialItemChargeBeforetaxLitigation us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Special
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.0-27.00.00.00.0250.00.081
Percentage of SpecialItemChargeBeforetaxLitigation0.0100.00.00.00.0100.00.0-0.0100.0

ci:SpecialItemChargesDebtExtinguishmentCostsBeforeTax

ci:SpecialItemChargesDebtExtinguishmentCostsBeforeTax


Special
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value10.01310.00.0141850.00.0
Percentage of SpecialItemChargesDebtExtinguishmentCostsBeforeTax100.0100.00.00.0100.0100.00.00.0

ci:SpecialItemChargesDebtExtinguishmentCostsBeforeTax us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Special
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value10.01310.00.014185
Percentage of SpecialItemChargesDebtExtinguishmentCostsBeforeTax100.0100.00.00.0100.0100.0

ci:SpecialItemChargesDebtExtinguishmentCostsNetOfTax

ci:SpecialItemChargesDebtExtinguishmentCostsNetOfTax


Special
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value9.01010.00.0111400.00.0
Percentage of SpecialItemChargesDebtExtinguishmentCostsNetOfTax100.0100.00.00.0100.0100.00.00.0

ci:SpecialItemGainLossFromContractAdjustmentBeforeTaxes

ci:SpecialItemGainLossFromContractAdjustmentBeforeTaxes


Special
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.01170.0870.00.0
Percentage of SpecialItemGainLossFromContractAdjustmentBeforeTaxes0.0100.00.0100.00.00.0

ci:SpecialItemGainLossFromContractAdjustmentBeforeTaxes us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:HealthServices


Special
Period End2020-09-302020-06-302020-03-31
Value1170.087
Percentage of SpecialItemGainLossFromContractAdjustmentBeforeTaxes100.00.0100.0

ci:SpecialItemGainLossFromContractAdjustmentNetOfTax

ci:SpecialItemGainLossFromContractAdjustmentNetOfTax


Special
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.0890.0660.00.0
Percentage of SpecialItemGainLossFromContractAdjustmentNetOfTax0.0100.00.0100.00.00.0

ci:SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentBeforeTaxes

ci:SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentBeforeTaxes


Special
Period End2020-12-312020-09-30
Value0.0101
Percentage of SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentBeforeTaxes0.0100.0

ci:SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentBeforeTaxes us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:IntegratedMedical


Special
Period End2020-09-30
Value101
Percentage of SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentBeforeTaxes100.0

ci:SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentNetOfTax

ci:SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentNetOfTax


Special
Period End2020-12-312020-09-30
Value0.076
Percentage of SpecialItemGainLossOnRiskCorridorAllowanceAdjustmentNetOfTax0.0100.0

ci:SpecialItemGainOrLossBeforeTaxAttributableToReportngEntity

ci:SpecialItemGainOrLossBeforeTaxAttributableToReportngEntity


Special
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-26.0-133.04015106-144.0-251.0-354.0-84.0-236.0-136.0-514.0-175.0-130.0
Percentage of SpecialItemGainOrLossBeforeTaxAttributableToReportngEntity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:SpecialItemGainOrLossNetOfTaxAttributableToReportngEntity

ci:SpecialItemGainOrLossNetOfTaxAttributableToReportngEntity


Special
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-23.0-102.0306982-110.0-191.0-278.0-65.0-179.0-108.0-389.0-138.0-109.0-50.0-221.0-215.047-132.0
Percentage of SpecialItemGainOrLossNetOfTaxAttributableToReportngEntity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:SpecialItemsIncreaseDecreaseToRevenues

ci:SpecialItemsIncreaseDecreaseToRevenues


Special
Period End2020-12-312020-09-302020-06-302020-03-31
Value0-117000000.00-87000000.0
Percentage of SpecialItemsIncreaseDecreaseToRevenues0.0100.00.0100.0

ci:SpecialItemsIncreaseDecreaseToRevenues us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ci:HealthServices


Special
Period End2020-09-302020-06-302020-03-31
Value-117000000.00-87000000.0
Percentage of SpecialItemsIncreaseDecreaseToRevenues100.00.0100.0

ci:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpenseLessInterestAccretion us-gaap:StatementBusinessSegments

ci:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpenseLessInterestAccretion

ci:InternationalMarkets


Supplemental
Period End2021-06-302021-03-31
Value-3.0-48.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpenseLessInterestAccretion100.0100.0

ci:InternationalMarketsGroupDisabilityAndLife


Supplemental
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value31-4.0-54.04619-17.0-10.0-32.014-72.0-28.0-61.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpenseLessInterestAccretion0.00.00.00.00.00.00.00.00.00.00.00.0

ci:TemporaryEquityOtherComprehensiveIncome

ci:TemporaryEquityOtherComprehensiveIncome


Temporary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1000000.0-4000000.02000000.0-4000000.0-2000000.0-4000000.0-2000000.01000000.0-2000000.0-2000000.04000000.0-9000000.0-8000000.0-2000000.0
Percentage of TemporaryEquityOtherComprehensiveIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:TemporaryEquityOtherComprehensiveIncome us-gaap:StatementEquityComponents

us-gaap:AccumulatedForeignCurrencyAdjustmentAttributableToNoncontrollingInterest


Temporary
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1000000.0-4000000.0-2000000.0-4000000.0
Percentage of TemporaryEquityOtherComprehensiveIncome100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Temporary
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-4000000.0-2000000.0-4000000.01000000.0-2000000.0-2000000.0
Percentage of TemporaryEquityOtherComprehensiveIncome100.0100.0100.0100.0100.0100.0

ci:TransactionRelatedCosts

ci:TransactionRelatedCosts


Transaction
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value16291881121309714711415513653412813060
Percentage of TransactionRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:TransactionRelatedCosts us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Transaction
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value162918811213097147114155136
Percentage of TransactionRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:TransactionRelatedCostsAfterTax

ci:TransactionRelatedCostsAfterTax


Transaction
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value14221488399741168811510840210810950256.0-47.049
Percentage of TransactionRelatedCostsAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionsToContractHoldersFunds

us-gaap:AdditionsToContractHoldersFunds


Additions
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4947254240262267224233251247224242282292
Percentage of AdditionsToContractHoldersFunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

ci:MDLIVEInc


Business
Period End2021-04-19
Value2000
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1

ci:MDLIVEInc


Business
Period End2021-04-19
Value2083
Percentage of BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1100.0

us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1

ci:MDLIVEInc


Business
Period End2021-04-19
Value55
Percentage of BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1100.0

us-gaap:CededPremiumsEarned

us-gaap:CededPremiumsEarned


Ceded
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value134149122117128124126130113132135
Percentage of CededPremiumsEarned100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-31
Value-11.00.0-2.025550.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded100.00.0100.0100.0100.00.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold


Debt
Period End2020-12-312020-09-30
Value30-6.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value9.08.015273931189.014
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.02.00.0147.02.05.02.010.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3433470.00.00.0150.00.00.0150.00.00.010.0
Percentage of DividendsCommonStockCash100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:Parent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3433470.00.00.0150.00.00.0150.00.00.010.0
Percentage of DividendsCommonStockCash100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3433470.00.00.0150.00.00.0150.00.00.010.0
Percentage of DividendsCommonStockCash100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.0-26.0488.022-37.019-17.02.0-12.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1.0-10.0-11.0-1.017-12.0-1.0-6.00.0-1.0-1.00.0-1.0-20.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.0-16.0301712-71.06.04.05.07.00.02.0-5.0-5.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4229403.02.0621910.0430.03.03.06.010.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3313-142.0-6.0-3.048164.034-1.0-38.0-11.0-7.0-3.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

ci:DebtAndEquitySecurities


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1081.00.0120.00.00.00.00.00.00.011
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.0100.00.0100.00.00.00.00.00.00.00.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9.016748.05.02.03.06.09.01.04114132.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3 us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3786145102179348578013200.0240.020
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-89.0702869612562180-44.019-19.0-49.0-53.0-104.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

ci:DebtAndEquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value126161173311892360.0571.0197353124
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:GuaranteeObligationsLiquidationProceeds us-gaap:ProductOrService, us-gaap:GuaranteeObligationsByNature

us-gaap:GuaranteeObligationsLiquidationProceeds

ci:RetirementAndLifeInsuranceContracts, us-gaap:FinancialGuarantee


Guarantee
Period End2021-06-302021-03-312020-12-31
Value5.0445-5.0
Percentage of GuaranteeObligationsLiquidationProceeds100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value18131420-1314.068910651056-458.06.0769396-948.0238-48.053
Percentage of IncreaseDecreaseInAccountsAndOtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4535468198161-87.015979162118-11.03.0-9.0
Percentage of IncreaseDecreaseInDeferredIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value57606367391388063485142566376
Percentage of IncreaseDecreaseInDeferredPolicyAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInInsuranceLiabilities

us-gaap:IncreaseDecreaseInInsuranceLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value234443101257142341-15.0293-63.0360152-547.0106849
Percentage of IncreaseDecreaseInInsuranceLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInReinsuranceRecoverable

us-gaap:IncreaseDecreaseInReinsuranceRecoverable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value456-40.0-698.0496-238.0210185-85.0301-124.0589-166.0-138.0-51.0
Percentage of IncreaseDecreaseInReinsuranceRecoverable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3450000.03728000.0-11000.02763000.03301000.04199000.0188000.03479000.03007000.04637000.0230000.03535000.02886000.03609000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1 us-gaap:StatementBusinessSegments

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

ci:IntegratedMedical


Liability
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value64765314427162965926584337865385521050013382
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:InternationalMarkets


Liability
Period End2021-06-302021-03-31
Value596326
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear10.00.0

ci:InternationalMarketsGroupDisabilityAndLife


Liability
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value116010788674901066100794147410081007905471
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear10.016.616.311.516.917.016.112.518.719.318.113.9

ci:USMedical


Liability
Period End2021-06-302021-03-312020-06-302020-03-31
Value7028442353144271
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear10.00.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1 us-gaap:StatementBusinessSegments

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

ci:IntegratedMedical


Liability
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value79257202736262261908191501641540
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:InternationalMarkets


Liability
Period End2021-06-302021-03-31
Value95372
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears10.00.0

ci:InternationalMarketsGroupDisabilityAndLife


Liability
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value313349407946279319419856247290418853
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears10.0441.8158.446.7775.01226.9185.444.9129.3580.0254.955.4

ci:USMedical


Liability
Period End2021-06-302021-03-312020-06-302020-03-31
Value25523172572027
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears10.00.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss

ci:InternationalMarkets


Liability
Period End2021-06-302021-03-31
Value1.020
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss100.0100.0

ci:InternationalMarketsGroupDisabilityAndLife


Liability
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-37.0-19.0-11.025-15.010.09.07.0252.016-2.0
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1 us-gaap:StatementBusinessSegments

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

ci:IntegratedMedical


Liability
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value67275573650961936039599359785485523052745169
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:InternationalMarkets


Liability
Period End2021-06-302021-03-31
Value694676
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims10.00.0

ci:InternationalMarketsGroupDisabilityAndLife


Liability
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value160014811341156114651410141914341359131313171370
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims10.022.024.124.023.723.323.724.024.825.125.026.5

ci:USMedical


Liability
Period End2021-06-302021-03-312020-06-302020-03-31
Value7515710055736509
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims10.00.0100.0100.0

us-gaap:NetIncomeLossAttributableToNonredeemableNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNonredeemableNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.05.05.06.02.04.04.00.00.01.00.00.00.00.0
Percentage of NetIncomeLossAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.00.00.0

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.05.02.04.04.04.03.03.02.03.03.02.02.02.0
Percentage of NetIncomeLossAttributableToRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value147311664140139417561185981135114081369144772806915
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6.05.05.06.02.04.04.00.00.01.0
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest0.40.40.10.40.10.30.40.00.00.1

us-gaap:Parent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value146711614135138817541181977135114081368144772806915
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest99.699.699.999.699.999.799.6100.0100.099.9100.0100.0100.0100.0

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value146711614135138817541181977135114081368144772806915
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest99.699.699.999.699.999.799.6100.0100.099.9100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value170-342.0277159920-580.0-39.0298442565
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value-133.00.0-73.0-240.0-1.0-8.01050.0-12.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax-48.00.0-7.9615.4-0.3-1.80.00.00.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value130-277.0223132723-453.0-25.0230348443
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value-102.00.0-56.0-182.0-1.0-7.0820.0-9.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-45.70.0-7.7728.0-0.4-2.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value40-65.05427197-127.0-14.06894122
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value-31.00.0-17.0-58.00.0-1.0230.0-3.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax-57.40.0-8.6414.30.0-1.10.00.00.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-15.0-18.090-14.042-13.0170-12.0-14.0-11.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForLossesAndLossAdjustmentExpense us-gaap:StatementBusinessSegments

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

ci:IntegratedMedical


Payments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value65555571629863325952606956945576526051654922
Percentage of PaymentsForLossesAndLossAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:InternationalMarkets


Payments
Period End2021-06-302021-03-31
Value691698
Percentage of PaymentsForLossesAndLossAdjustmentExpense0.00.0

ci:InternationalMarketsGroupDisabilityAndLife


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value147314271274143613451326136013301255129713231324
Percentage of PaymentsForLossesAndLossAdjustmentExpense0.021.822.922.821.222.322.423.422.524.725.626.9

ci:USMedical


Payments
Period End2021-06-302021-03-312020-06-302020-03-31
Value7283674055716298
Percentage of PaymentsForLossesAndLossAdjustmentExpense0.00.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value140.00.0-37.04.01.06.00.00.012
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.00.00.0100.0100.0100.0100.00.00.0100.0

us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsOfDebtExtinguishmentCosts


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value10.01260.00.0201920.00.0
Percentage of PaymentsOfDebtExtinguishmentCosts100.0100.00.00.0100.0100.00.00.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.01350.00.01470.00.06.0244550.00.00.0
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.00.00.0100.00.00.0100.0100.00.00.00.0

us-gaap:PaymentsToAcquireMortgageNotesReceivable

us-gaap:PaymentsToAcquireMortgageNotesReceivable


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5842130.086378995249412668
Percentage of PaymentsToAcquireMortgageNotesReceivable100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value499637490500554380539367459388529159295206
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromCollectionOfLoansReceivable

us-gaap:ProceedsFromCollectionOfLoansReceivable


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value24725.04.05.05.0255.0808934936028
Percentage of ProceedsFromCollectionOfLoansReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromDivestitureOfBusinesses us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:ProceedsFromDivestitureOfBusinesses

us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperations, ci:USGroupDisabilityAndLifeInsuranceBusiness


Proceeds
Period End2020-12-31
Value6200
Percentage of ProceedsFromDivestitureOfBusinesses100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8620413710.07615312331175327147.020
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLegalSettlements us-gaap:LitigationCase, us-gaap:GainContingenciesByNature, us-gaap:LitigationStatus

us-gaap:ProceedsFromLegalSettlements

ci:CSRLitigationWithTheFederalGovernment, ci:CollectibilityOfRiskCorridorPaymentsReceivable, us-gaap:PendingLitigation


Proceeds
Period End2020-09-30
Value120
Percentage of ProceedsFromLegalSettlements100.0

us-gaap:ProceedsFromLegalSettlements us-gaap:LitigationCase, us-gaap:LitigationStatus

ci:CSRLitigationWithTheFederalGovernment, us-gaap:PendingLitigation


Proceeds
Period End2020-09-30
Value120
Percentage of ProceedsFromLegalSettlements100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11-35.0-97.0-97.0-65.0841.0-2.0-33.0-73.0-108.0-101.0-11.0-92.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value533364489422318346333328283367146176300112
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3771833808807438355915651086695657774499
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Reclassification
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1619-32.010.06.01.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax100.0100.0100.0100.0100.0100.0

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesRealizedInvestmentGainsLossesParent


Reclassification
Period End2021-06-302021-03-312020-06-302020-03-31
Value11-5.019-32.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax0.00.0100.0100.0

ci:AccumulatedDefinedBenefitPlansAdjustmentSettlement


Reclassification
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1.0-3.00.00.00.00.00.0-10.00.00.00.00.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax0.00.00.0-0.00.00.00.0-1000.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit


Reclassification
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-20.0-16.0-18.0-18.0-18.0-15.0-16.0-16.0-15.0-16.0-19.0-17.0-17.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax0.00.0-112.5-94.756.20.0-160.0-266.7-1500.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss


Reclassification
Period End2021-06-302020-06-30
Value-19.0-18.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax0.0-94.7

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value8.0-4.06991214-25.0267.05.01.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-15.0-18.0-12.0-14.0-14.0-13.0-12.0-13.0-21.0-11.0-14.0-13.0-14.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax-187.5450.0-1.7-116.7-100.052.0-46.2-185.7-420.0-1100.00.00.00.0

us-gaap:ReclassificationFromAociCurrentPeriodTax us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax

ci:AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleAndDerivativesParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.0-1.01864.05.0-7.06.03.01.00.0
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-5.0-5.0-4.0-4.0-4.0-5.0-3.0-3.05.0-14.0-2.0-6.0-3.0-4.0
Percentage of ReclassificationFromAociCurrentPeriodTax-166.7500.0-2.2-100.0-80.071.4-50.0-100.0500.00.00.00.00.00.0

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13314834117102178103180535915214056104
Percentage of ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfShortTermDebt us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument, us-gaap:ShortTermDebtType

us-gaap:RepaymentsOfShortTermDebt

srt:ParentCompany, ci:A364DayTermLoan, us-gaap:LineOfCredit


Repayments
Period End2020-12-31
Value1400
Percentage of RepaymentsOfShortTermDebt100.0

us-gaap:RepaymentsOfShortTermDebt us-gaap:DebtInstrument, us-gaap:ShortTermDebtType

ci:A364DayTermLoan, us-gaap:LineOfCredit


Repayments
Period End2020-12-31
Value1400
Percentage of RepaymentsOfShortTermDebt100.0

us-gaap:ShortdurationInsuranceContractsDiscountedLiabilitiesInterestAccretion us-gaap:StatementBusinessSegments

us-gaap:ShortdurationInsuranceContractsDiscountedLiabilitiesInterestAccretion

ci:InternationalMarketsGroupDisabilityAndLife


Shortduration
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value363739423536433841383938
Percentage of ShortdurationInsuranceContractsDiscountedLiabilitiesInterestAccretion100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1501921977613917018999887513543822
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value152279201781452481912243610414111123
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation101.3145.3102.0102.6104.3145.9101.1226.340.9138.7107.720.428.9104.5

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1501921977613917018999887513543822
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2.0-87.0-4.0-2.0-6.0-78.0-2.0-125.052-29.031634468
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation-1.3-45.3-2.0-2.6-4.3-45.9-1.1-126.359.1-38.7238.5116.7115.8309.1

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense us-gaap:StatementBusinessSegments

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

ci:IntegratedMedical


Supplemental
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value67235551666161996049602560955500524353045284
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:InternationalMarkets


Supplemental
Period End2021-06-302021-03-31
Value697724
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense0.00.0

ci:InternationalMarketsGroupDisabilityAndLife


Supplemental
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value153314481356147314111391138614281304134713061393
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense0.021.524.422.122.823.023.023.423.725.724.626.4

ci:USMedical


Supplemental
Period End2021-06-302021-03-312020-06-302020-03-31
Value7511728555516661
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense0.00.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:NoncatastrophicEvent, us-gaap:StatementBusinessSegments

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

ci:CompletionFactors, ci:IntegratedMedical


Supplemental
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3000000.013000000.0-63000000.0-3000000.04000000.0-36000000.0-55000000.0-13000000.0-15000000.0-12000000.0-52000000.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:CompletionFactors, ci:USMedical


Supplemental
Period End2021-06-302021-03-312020-06-302020-03-31
Value13000000.0-68000000.013000000.0-63000000.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense0.00.0100.0100.0

ci:MedicalCostTrend, ci:IntegratedMedical


Supplemental
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1000000.09000000.0-89000000.0-3000000.0-14000000.04000000.0-62000000.0-2000000.02000000.0-18000000.0-54000000.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense33.369.2141.3100.0-350.0-11.1112.715.4-13.3150.0103.8

ci:MedicalCostTrend, ci:USMedical


Supplemental
Period End2021-06-302021-03-312020-06-302020-03-31
Value-9000000.0-117000000.09000000.0-89000000.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense0.00.069.2141.3

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:StatementBusinessSegments

ci:IntegratedMedical


Supplemental
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4000000.022000000.0-152000000.0-6000000.0-10000000.0-32000000.0-117000000.0-15000000.0-13000000.0-30000000.0-115000000.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense133.3169.2241.3200.0-250.088.9212.7115.486.7250.0221.2

ci:USMedical


Supplemental
Period End2021-06-302021-03-312020-06-302020-03-31
Value4000000.0-185000000.022000000.0-152000000.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense0.00.0169.2241.3

us-gaap:TemporaryEquityNetIncome

us-gaap:TemporaryEquityNetIncome


Temporary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.05.02.04.04.04.03.03.02.03.03.02.02.02.0
Percentage of TemporaryEquityNetIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TemporaryEquityOtherChanges

us-gaap:TemporaryEquityOtherChanges


Temporary
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value-10.0-5.025-3.00.0-1.0-7.00.0-2.0-4.0
Percentage of TemporaryEquityOtherChanges100.0100.0100.0100.00.0100.0100.00.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value865280817201045345979441676406462540.00.0275
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:Parent


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value865280817201045345979441676406462540.00.0275
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value865280817201045345979441676406462540.00.0275
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:WeightedAverageNumberOfSharesIssuedBasic

us-gaap:WeightedAverageNumberOfSharesIssuedBasic


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value341348-2.431364367370-1.4623743773794.248242242242
Percentage of WeightedAverageNumberOfSharesIssuedBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WithdrawalFromContractHoldersFunds

us-gaap:WithdrawalFromContractHoldersFunds


Withdrawal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6135243253228255252303291251279278288306
Percentage of WithdrawalFromContractHoldersFunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:AccruedExpensesAndOtherLiabilities

ci:AccruedExpensesAndOtherLiabilities


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value721279218515715379917585734771966713736170713963
Percentage of AccruedExpensesAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:AllowanceForReceivablesClientCredits

ci:AllowanceForReceivablesClientCredits


Allowance
Period End2020-12-31
Value224
Percentage of AllowanceForReceivablesClientCredits100.0

ci:AllowanceForReceivablesNetCurrent

ci:AllowanceForReceivablesNetCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value15001300120012001100928778217
Percentage of AllowanceForReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0

ci:AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

ci:AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:SeparateAccountAssets, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:FairValueMeasurementsRecurring


Alternative
Period End2020-09-302020-06-302020-03-312019-12-31
Value736727742756
Percentage of AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

ci:SeparateAccountAssets, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:FairValueMeasurementsRecurring, srt:PartnershipInterest


Alternative
Period End2020-09-302020-06-302020-03-312019-12-31
Value511499513531
Percentage of AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale69.468.669.170.2

ci:SeparateAccountAssets, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:FairValueMeasurementsRecurring, us-gaap:HedgeFunds


Alternative
Period End2020-09-302020-06-302020-03-312019-12-31
Value4.04.05.05.0
Percentage of AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale0.50.60.70.7

ci:SeparateAccountAssets, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:FairValueMeasurementsRecurring, us-gaap:RealEstateFunds


Alternative
Period End2020-09-302020-06-302020-03-312019-12-31
Value221224224220
Percentage of AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale30.030.830.229.1

ci:AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Alternative
Period End2020-09-302020-06-302020-03-312019-12-31
Value165168179184
Percentage of AlternativeInvestmentBeforeReclassificationToDisposalGroupAssetsHeldForSale22.423.124.124.3

ci:AssetsMeasuredAtFairValueUnderCertainConditionsPercentOfTotalInvestments us-gaap:Range

ci:AssetsMeasuredAtFairValueUnderCertainConditionsPercentOfTotalInvestments

srt:Maximum


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.01.01.01.00.010.010.010.010.010.010.010.010.01
Percentage of AssetsMeasuredAtFairValueUnderCertainConditionsPercentOfTotalInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ci:AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value22273216262167521909
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value514475495506
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale2.32.22.32.3

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value18629180801813818149
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale83.683.683.782.8

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value2091200219302027
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale9.49.38.99.3

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value628654701729
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale2.83.03.23.3

us-gaap:USTreasuryAndGovernment


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value411415411498
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale1.81.91.92.3

ci:AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:StatementBusinessSegments

ci:RunoffSettlementAnnuityBusiness


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value2147220921892229
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasisBeforeReclassificationToDisposalGroupAssetsHeldForSale9.610.210.110.2

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value2547229113861876
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value32281631
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale1.31.21.21.7

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value189016638231299
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale74.272.659.469.2

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value317293255230
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale12.412.818.412.3

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value85857681
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale3.33.75.54.3

us-gaap:USTreasuryAndGovernment


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value223222216235
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale8.89.715.612.5

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:StatementBusinessSegments

ci:RunoffSettlementAnnuityBusiness


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value828803627740
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale32.535.145.239.4

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value10719548830
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value2223231.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale20.611.84.73.3

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value7916145828
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale73.882.693.993.3

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value6.09.07.01.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale5.64.61.43.3

ci:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:StatementBusinessSegments

ci:RunoffSettlementAnnuityBusiness


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value1325454.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxBeforeReclassificationToDisposalGroupAssetsHeldForSale12.112.89.213.3

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale ci:InvestmentsCreditRating

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:BelowInvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value1113174.0
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:InvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value4.0203212
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale36.4153.8188.2300.0

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale ci:InvestmentsCreditRating

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:BelowInvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value61871738.0
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:InvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value31752666.0
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale50.886.2153.875.0

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale ci:InvestmentsCreditRating

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:BelowInvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value77410551712348
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:InvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value122414124816729
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale158.1133.8281.3209.5

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale ci:InvestmentsCreditRating

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:BelowInvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value7139681539340
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:InvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value119313374550723
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale167.3138.1295.6212.6

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale ci:InvestmentsCreditRating

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:BelowInvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value87888188
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:InvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value111221226378
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale127.6251.1279.0429.5

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale ci:InvestmentsCreditRating

ci:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:BelowInvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value76756484
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:InvestmentGrade


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value107201194366
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale140.8268.0303.1435.7

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value9011
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value10015
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value7403
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value7789
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value4212
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value5211
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value1133
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value1143
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value514
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCostBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value515
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValueBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value24673236742257323755
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value183192193197
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale0.70.80.90.8

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value23575226532162923035
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale95.595.795.897.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value915829751523
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale3.73.53.32.2

ci:AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasuryAndGovernment


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value183192193197
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale0.70.80.90.8

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value368322321398
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale1.51.41.41.7

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value19662188891794419063
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale79.779.879.580.2

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value2381226021532228
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale9.79.59.59.4

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value713737777810
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale2.93.13.43.4

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasuryAndGovernment


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value451445434536
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale1.81.91.92.3

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value147149167138
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale0.60.60.70.6

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value747654559357
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale3.02.82.51.5

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value21262528
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale0.10.10.10.1

ci:AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value24673236742257323755
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

ci:AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value515471488536
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale2.12.02.22.3

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value20409195431850319420
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale82.782.682.081.8

us-gaap:FairValueMeasurementsRecurring, us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value2402228621782256
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale9.79.79.69.5

us-gaap:FairValueMeasurementsRecurring, us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value713737777810
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale2.93.13.43.4

us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasuryAndGovernment


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value634637627733
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale2.62.72.83.1

ci:AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value515471488536
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale2.12.02.22.3

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value20409195431850319420
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale82.782.682.081.8

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value2402228621782256
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale9.79.79.69.5

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value713737777810
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale2.93.13.43.4

us-gaap:USTreasuryAndGovernment


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value634637627733
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale2.62.72.83.1

ci:AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:StatementBusinessSegments

ci:RunoffSettlementAnnuityBusiness


Available
Period End2020-09-302020-06-302020-03-312019-12-31
Value2953297627712965
Percentage of AvailableForSaleSecuritiesDebtSecuritiesBeforeReclassificationToDisposalGroupAssetsHeldForSale12.012.612.312.5

ci:AvailableForSaleSecuritiesFixedMaturitiesFairValueExcludingTradingHybridBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:AvailableForSaleSecuritiesFixedMaturitiesFairValueExcludingTradingHybridBeforeReclassificationToDisposalGroupAssetsHeldForSale


Available
Period End2020-09-30
Value24673
Percentage of AvailableForSaleSecuritiesFixedMaturitiesFairValueExcludingTradingHybridBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:BusinessCombinationRecognizedIdentifiableTangibleAssetsAcquiredAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

ci:BusinessCombinationRecognizedIdentifiableTangibleAssetsAcquiredAndLiabilitiesAssumedNet

ci:MDLIVEInc


Business
Period End2021-04-19
Value19
Percentage of BusinessCombinationRecognizedIdentifiableTangibleAssetsAcquiredAndLiabilitiesAssumedNet100.0

ci:CashCashEquivalentsAndShortTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale ci:ShortTermInvestmentsAndCashEquivalents

ci:CashCashEquivalentsAndShortTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale

us-gaap:CorporateDebtSecurities


Cash
Period End2020-09-302020-06-302020-03-312019-12-31
Value2729426619541985
Percentage of CashCashEquivalentsAndShortTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.0100.0100.0

us-gaap:ForeignGovernmentDebtSecurities


Cash
Period End2020-09-302020-06-302020-03-312019-12-31
Value89322565
Percentage of CashCashEquivalentsAndShortTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale3.30.81.33.3

us-gaap:MoneyMarketFunds


Cash
Period End2020-09-302020-06-302020-03-312019-12-31
Value313814963631
Percentage of CashCashEquivalentsAndShortTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale11.519.149.331.8

us-gaap:USTreasuryAndGovernment


Cash
Period End2020-09-302020-06-302020-03-312019-12-31
Value1139482110472
Percentage of CashCashEquivalentsAndShortTermInvestmentsBeforeReclassificationToDisposalGroupAssetsHeldForSale41.711.35.623.8

ci:CommitmentsToContributeAdditionalEquityAndCapital

ci:CommitmentsToContributeAdditionalEquityAndCapital


Commitments
Period End2020-12-312019-12-312018-12-31
Value232519541472
Percentage of CommitmentsToContributeAdditionalEquityAndCapital100.0100.0100.0

ci:CommitmentsToContributeAdditionalEquityAndCapital us-gaap:InvestmentType

srt:PartnershipInterest


Commitments
Period End2020-12-31
Value1617
Percentage of CommitmentsToContributeAdditionalEquityAndCapital69.5

us-gaap:OtherInvestments


Commitments
Period End2020-12-31
Value31
Percentage of CommitmentsToContributeAdditionalEquityAndCapital1.3

us-gaap:RealEstateInvestment


Commitments
Period End2020-12-31
Value677
Percentage of CommitmentsToContributeAdditionalEquityAndCapital29.1

ci:ContractualAllowancesManufacturersReceivablesNetCurrent

ci:ContractualAllowancesManufacturersReceivablesNetCurrent


Contractual
Period End2020-12-31
Value757
Percentage of ContractualAllowancesManufacturersReceivablesNetCurrent100.0

ci:ContractualAllowancesThirdPartyPayorsReceivablesNetCurrent

ci:ContractualAllowancesThirdPartyPayorsReceivablesNetCurrent


Contractual
Period End2020-12-31
Value208
Percentage of ContractualAllowancesThirdPartyPayorsReceivablesNetCurrent100.0

ci:CreditFacilityMaximumBorrowingCapacityAdditional us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument

ci:CreditFacilityMaximumBorrowingCapacityAdditional

srt:ParentCompany, ci:RevolvingCreditAndLetterOfCreditFacility


Credit
Period End2020-12-31
Value500
Percentage of CreditFacilityMaximumBorrowingCapacityAdditional100.0

ci:DebtAndEquitySecuritiesClassifiedInLevel2PercentageBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:DebtAndEquitySecuritiesClassifiedInLevel2PercentageBeforeReclassificationToDisposalGroupAssetsHeldForSale


Debt
Period End2020-09-30
Value95.0
Percentage of DebtAndEquitySecuritiesClassifiedInLevel2PercentageBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:DebtAndEquitySecuritiesClassifiedInLevel3PercentageBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:DebtAndEquitySecuritiesClassifiedInLevel3PercentageBeforeReclassificationToDisposalGroupAssetsHeldForSale


Debt
Period End2020-09-30
Value4.0
Percentage of DebtAndEquitySecuritiesClassifiedInLevel3PercentageBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0

ci:DebtSecuritiesAvailableForSaleAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:DebtSecuritiesAvailableForSaleAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale


Debt
Period End2020-09-302020-06-302019-12-31
Value40480.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale100.0100.00.0

ci:DebtSecuritiesAvailableForSaleAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Debt
Period End2020-09-302020-06-302019-12-31
Value9.09.00.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale22.518.80.0

us-gaap:CorporateDebtSecurities


Debt
Period End2020-09-302020-06-302019-12-31
Value31390.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale77.581.20.0

ci:DebtSecuritiesAvailableForSaleAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale us-gaap:StatementBusinessSegments

ci:RunoffSettlementAnnuityBusiness


Debt
Period End2020-09-302020-06-302019-12-31
Value9.0110.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossBeforeReclassificationToDisposalGroupAssetsHeldForSale22.522.90.0

ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAmortizedCost ci:InvestmentsCreditRating

ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAmortizedCost

ci:BelowInvestmentGrade


Debt
Period End2021-06-302020-12-31
Value154100
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAmortizedCost100.0100.0

ci:InvestmentGrade


Debt
Period End2021-06-302020-12-31
Value5518
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAmortizedCost35.718.0

ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAmortizedCost ci:InvestmentsCreditRating, us-gaap:FinancialInstrument

ci:BelowInvestmentGrade, us-gaap:DebtSecurities


Debt
Period End2021-03-312020-12-31
Value191100
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAmortizedCost0.0100.0

ci:InvestmentGrade, us-gaap:DebtSecurities


Debt
Period End2021-03-312020-12-31
Value7018
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAmortizedCost0.018.0

ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionAmortizedCost

ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionAmortizedCost


Debt
Period End2021-06-302021-03-312020-12-31
Value289930791568
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionAmortizedCost100.0100.0100.0

ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAmortizedCost ci:InvestmentsCreditRating

ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAmortizedCost

ci:BelowInvestmentGrade


Debt
Period End2021-06-302020-12-31
Value451405
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAmortizedCost100.0100.0

ci:InvestmentGrade


Debt
Period End2021-06-302020-12-31
Value22391045
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAmortizedCost496.5258.0

ci:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAmortizedCost ci:InvestmentsCreditRating, us-gaap:FinancialInstrument

ci:BelowInvestmentGrade, us-gaap:DebtSecurities


Debt
Period End2021-03-312020-12-31
Value485405
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAmortizedCost0.0100.0

ci:InvestmentGrade, us-gaap:DebtSecurities


Debt
Period End2021-03-312020-12-31
Value23331045
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAmortizedCost0.0258.0

ci:DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

ci:DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput

srt:Maximum, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, ci:CorporateAndGovernmentDebtSecurities, ci:MeasurementInputLiquidity, ci:UnobservableInputsDevelopedByCompany


Debt
Period End2020-09-302020-06-302019-12-31
Value1570.00.170.093
Percentage of DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput100.0100.0100.0

srt:Maximum, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities, ci:MeasurementInputLiquidity, ci:UnobservableInputsDevelopedByCompany


Debt
Period End2020-09-302020-06-302019-12-31
Value370.00.0370.037
Percentage of DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput23.621.839.8

srt:Maximum, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities, us-gaap:MeasurementInputCreditSpread, ci:UnobservableInputsDevelopedByCompany


Debt
Period End2020-09-302020-06-302019-12-31
Value650.00.0620.046
Percentage of DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput41.436.549.5

srt:Minimum, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, ci:CorporateAndGovernmentDebtSecurities, ci:MeasurementInputLiquidity, ci:UnobservableInputsDevelopedByCompany


Debt
Period End2020-09-302020-06-302019-12-31
Value60.00.0070.007
Percentage of DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput3.84.17.5

srt:Minimum, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities, ci:MeasurementInputLiquidity, ci:UnobservableInputsDevelopedByCompany


Debt
Period End2020-09-302020-06-302019-12-31
Value60.00.0060.006
Percentage of DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput3.83.56.5

srt:Minimum, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities, us-gaap:MeasurementInputCreditSpread, ci:UnobservableInputsDevelopedByCompany


Debt
Period End2020-09-302020-06-302019-12-31
Value320.00.0310.024
Percentage of DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput20.418.225.8

srt:WeightedAverage, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, ci:CorporateAndGovernmentDebtSecurities, ci:MeasurementInputLiquidity, ci:UnobservableInputsDevelopedByCompany


Debt
Period End2020-09-302020-06-302019-12-31
Value410.00.0390.028
Percentage of DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput26.122.930.1

srt:WeightedAverage, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities, ci:MeasurementInputLiquidity, ci:UnobservableInputsDevelopedByCompany


Debt
Period End2020-09-302020-06-302019-12-31
Value80.00.0070.007
Percentage of DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput5.14.17.5

srt:WeightedAverage, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities, us-gaap:MeasurementInputCreditSpread, ci:UnobservableInputsDevelopedByCompany


Debt
Period End2020-09-302020-06-302019-12-31
Value460.00.0440.033
Percentage of DebtSecuritiesAvailableForSaleIncludingDisposalGroupMeasurementInput29.325.935.5

ci:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale

ci:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLossBeforeReclassificationToDisposalGroupAssetsHeldForSale


Debt
Period End2020-09-302020-06-302019-12-31
Value107