$HUM
HUMANA INC Stock $hum

$hum Overview Financials Valuation SEC Filings Company Website

2016 Form 8-K Financial Statement

#000004907117000175 Filed on December 14, 2017

Income Statement

Concept	2016	2015 Q4	2015
Revenue	$54.38B	$13.36B	$54.29B
YoY Change	0.17%	8.38%	11.94%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$7.173B		$7.295B
YoY Change	-1.67%		-4.5%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$388.0M	$112.0M	$354.0M
YoY Change	9.6%	-9.68%	7.93%
% of Gross Profit
Operating Expenses	$7.173B	$13.07B	$7.295B
YoY Change	-1.67%	9.33%	-4.5%
Operating Profit	$1.741B		$2.347B
YoY Change	-25.82%		-0.64%
Interest Expense	$189.0M	-$46.00M	$186.0M
YoY Change	1.61%	-45.24%	-3.13%
% of Operating Profit	10.86%		7.93%
Other Income/Expense, Net	$0.00
YoY Change
Pretax Income	$1.552B	$246.0M	$2.431B
YoY Change	-36.16%	-14.29%	12.03%
Income Tax	$938.0M	$145.0M	$1.155B
% Of Pretax Income	60.44%	58.94%	47.51%
Net Earnings	$614.0M	$101.0M	$1.276B
YoY Change	-51.88%	-30.34%	11.25%
Net Earnings / Revenue	1.13%	0.76%	2.35%
Basic Earnings Per Share	$4.11	$0.68	$8.54
Diluted Earnings Per Share	$4.07	$0.67	$8.44
COMMON SHARES
Basic Shares Outstanding	149.4M shares		149.5M shares
Diluted Shares Outstanding	150.9M shares		151.1M shares

Balance Sheet

Concept	2016	2015 Q4	2015
SHORT-TERM ASSETS
Cash & Short-Term Investments		$9.838B
YoY Change		3.2%
Cash & Equivalents	$3.877B	$2.571B	$2.571B
Short-Term Investments		$7.267B
Other Short-Term Assets		$4.712B
YoY Change		17.59%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets		$15.71B
YoY Change		1.13%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.505B	$1.384B	$1.384B
YoY Change	8.74%	12.7%	12.7%
Goodwill		$3.265B
YoY Change		1.05%
Intangibles		$357.0M
YoY Change		-18.86%
Long-Term Investments	$9.798B	$9.110B	$9.110B
YoY Change	7.55%	-4.58%	-4.58%
Other Assets		$2.475B
YoY Change		56.35%
Total Long-Term Assets		$8.967B
YoY Change		12.21%
TOTAL ASSETS
Total Short-Term Assets		$15.71B
Total Long-Term Assets		$8.967B
Total Assets	$25.40B	$24.68B	$24.68B
YoY Change	2.91%	4.89%	4.89%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.467B	$2.212B	$2.212B
YoY Change	11.53%	5.58%	5.58%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$212.0M	$299.0M	$301.0M
YoY Change	-29.57%		-9.88%
Long-Term Debt Due	$300.0M	$299.0M	$299.0M
YoY Change	0.33%
Total Short-Term Liabilities	$3.259B	$8.152B	$3.176B
YoY Change	2.61%	9.12%	13.84%
LONG-TERM LIABILITIES
Long-Term Debt	$3.792B	$3.794B	$3.794B
YoY Change	-0.05%	-0.81%	-0.81%
Other Long-Term Liabilities	$3.097B	$235.0M	$2.386B
YoY Change	29.8%	-0.42%	-14.51%
Total Long-Term Liabilities	$6.889B	$4.029B	$6.180B
YoY Change	11.47%	-0.79%	-6.59%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.259B	$8.152B	$3.176B
Total Long-Term Liabilities	$6.889B	$4.029B	$6.180B
Total Liabilities	$14.71B	$14.33B	$14.33B
YoY Change	2.64%	3.25%	3.25%
SHAREHOLDERS EQUITY
Retained Earnings		$11.02B
YoY Change		11.1%
Common Stock		$2.563B
YoY Change		8.46%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$3.292B
YoY Change		15.27%
Treasury Stock Shares		50.08M shares
Shareholders Equity	$10.69B	$10.35B	$10.35B
YoY Change
Total Liabilities & Shareholders Equity	$25.40B	$24.68B	$24.68B
YoY Change	2.91%	4.89%	4.89%

Cashflow Statement

Concept	2016	2015 Q4	2015
OPERATING ACTIVITIES
Net Income	$614.0M	$101.0M	$1.276B
YoY Change	-51.88%	-30.34%	11.25%
Depreciation, Depletion And Amortization	$388.0M	$112.0M	$354.0M
YoY Change	9.6%	-9.68%	7.93%
Cash From Operating Activities	$1.936B	$337.0M	$868.0M
YoY Change	123.04%	74.61%	-46.35%
INVESTING ACTIVITIES
Capital Expenditures	$527.0M	-$139.0M	$523.0M
YoY Change	0.76%	-16.77%	-0.95%
Acquisitions	$7.000M		$38.00M
YoY Change	-81.58%		111.11%
Other Investing Activities	-$835.0M	-$158.0M	$843.0M
YoY Change	-199.05%	-133.47%	81.29%
Cash From Investing Activities	-$1.362B	-$297.0M	$320.0M
YoY Change	-525.63%	-197.38%	-607.94%
FINANCING ACTIVITIES
Cash Dividend Paid	$177.0M		$172.0M
YoY Change	2.91%		0.0%
Common Stock Issuance & Retirement, Net	$104.0M		$385.0M
YoY Change	-72.99%		-55.85%
Debt Paid & Issued, Net	$0.00		$0.00
YoY Change			-100.0%
Cash From Financing Activities	$732.0M	934.0M	-$552.0M
YoY Change	-232.61%	-173.66%	-27.18%
NET CHANGE
Cash From Operating Activities	$1.936B	337.0M	$868.0M
Cash From Investing Activities	-$1.362B	-297.0M	$320.0M
Cash From Financing Activities	$732.0M	934.0M	-$552.0M
Net Change In Cash	$1.306B	974.0M	$636.0M
YoY Change	105.35%	-226.49%	-20.2%
FREE CASH FLOW
Cash From Operating Activities	$1.936B	$337.0M	$868.0M
Capital Expenditures	$527.0M	-$139.0M	$523.0M
Free Cash Flow	$1.409B	$476.0M	$345.0M
YoY Change	308.41%	32.22%	-68.35%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2016	dei	Amendment Flag AmendmentFlag	false
CY2016	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2016
CY2016	dei	Document Period End Date DocumentPeriodEndDate	2016-12-31
CY2016	dei	Document Type DocumentType	8-K
CY2016	dei	Entity Central Index Key EntityCentralIndexKey	0000049071
CY2016	dei	Entity Registrant Name EntityRegistrantName	HUMANA INC
CY2015Q4	hum	Accrued Pharmaceutical Rebates Current AccruedPharmaceuticalRebatesCurrent	723000000	USD
CY2016Q4	hum	Accrued Pharmaceutical Rebates Current AccruedPharmaceuticalRebatesCurrent	889000000	USD
CY2015	hum	Adjustment To Future Policy Benefits Assuming Unrealized Gains On Investments Realized And Reinvested At Current Yields AdjustmentToFuturePolicyBenefitsAssumingUnrealizedGainsOnInvestmentsRealizedAndReinvestedAtCurrentYields	0	USD
CY2016	hum	Adjustment To Future Policy Benefits Assuming Unrealized Gains On Investments Realized And Reinvested At Current Yields AdjustmentToFuturePolicyBenefitsAssumingUnrealizedGainsOnInvestmentsRealizedAndReinvestedAtCurrentYields	77000000	USD
CY2016	hum	Amount Held In Cash And Securities In Trust At Least Equal To Recoverable From Reinsurer AmountHeldInCashAndSecuritiesInTrustAtLeastEqualToRecoverableFromReinsurer	93000000	USD
CY2016Q4	hum	Availableforsale Securitiesin Unrealized Loss Positions Qualitative Disclosure Numberof Position In Loss AvailableforsaleSecuritiesinUnrealizedLossPositionsQualitativeDisclosureNumberofPositionInLoss	990	position
CY2014	hum	Benefit Expenses Associated With Military Services And Provisions Associated With Future Policy Benefits BenefitExpensesAssociatedWithMilitaryServicesAndProvisionsAssociatedWithFuturePolicyBenefits	43000000	USD
CY2015	hum	Benefit Expenses Associated With Military Services And Provisions Associated With Future Policy Benefits BenefitExpensesAssociatedWithMilitaryServicesAndProvisionsAssociatedWithFuturePolicyBenefits	108000000	USD
CY2016	hum	Benefit Expenses Associated With Military Services And Provisions Associated With Future Policy Benefits BenefitExpensesAssociatedWithMilitaryServicesAndProvisionsAssociatedWithFuturePolicyBenefits	271000000	USD
CY2016	hum	Closing Stock Price ClosingStockPrice	204.03
CY2016	hum	Combination Of Age And Years Necessary For Retirement Provision As Related To Our Equity Award Program CombinationOfAgeAndYearsNecessaryForRetirementProvisionAsRelatedToOurEquityAwardProgram	P65Y
CY2015Q3	hum	Common Stock Dividends Per Share Maximum Allowed Prior To Merger CommonStockDividendsPerShareMaximumAllowedPriorToMerger	0.29
CY2016	hum	Consumer Discounts On Brand Name Prescription Drugs ConsumerDiscountsOnBrandNamePrescriptionDrugs	0.5
CY2015Q4	hum	Deferred Tax Assets Deferred Policy Acquisition Cost DeferredTaxAssetsDeferredPolicyAcquisitionCost	64000000	USD
CY2016Q4	hum	Deferred Tax Assets Deferred Policy Acquisition Cost DeferredTaxAssetsDeferredPolicyAcquisitionCost	72000000	USD
CY2015Q4	hum	Deferred Tax Assets Future Policy Benefits Payable DeferredTaxAssetsFuturePolicyBenefitsPayable	200000000	USD
CY2016Q4	hum	Deferred Tax Assets Future Policy Benefits Payable DeferredTaxAssetsFuturePolicyBenefitsPayable	355000000	USD
CY2015Q4	hum	Deferred Tax Liabilities Depreciable Property And Intangible Assets DeferredTaxLiabilitiesDepreciablePropertyAndIntangibleAssets	363000000	USD
CY2016Q4	hum	Deferred Tax Liabilities Depreciable Property And Intangible Assets DeferredTaxLiabilitiesDepreciablePropertyAndIntangibleAssets	363000000	USD
CY2014	hum	Depreciation And Amortization Classified As Benefit Expense DepreciationAndAmortizationClassifiedAsBenefitExpense	116000000	USD
CY2015	hum	Depreciation And Amortization Classified As Benefit Expense DepreciationAndAmortizationClassifiedAsBenefitExpense	92000000	USD
CY2016	hum	Depreciation And Amortization Classified As Benefit Expense DepreciationAndAmortizationClassifiedAsBenefitExpense	111000000	USD
CY2014	hum	Depreciation And Amortization Income Statement DepreciationAndAmortizationIncomeStatement	333000000	USD
CY2015	hum	Depreciation And Amortization Income Statement DepreciationAndAmortizationIncomeStatement	355000000	USD
CY2016	hum	Depreciation And Amortization Income Statement DepreciationAndAmortizationIncomeStatement	354000000	USD
CY2016	hum	Dividends To Parent Without Prior State Regulatory Approval DividendsToParentWithoutPriorStateRegulatoryApproval	763000000	USD
CY2014	hum	Effective Income Tax Rate Reconciliation Health Insurer Fee Amount EffectiveIncomeTaxRateReconciliationHealthInsurerFeeAmount	204000000	USD
CY2015	hum	Effective Income Tax Rate Reconciliation Health Insurer Fee Amount EffectiveIncomeTaxRateReconciliationHealthInsurerFeeAmount	314000000	USD
CY2016	hum	Effective Income Tax Rate Reconciliation Health Insurer Fee Amount EffectiveIncomeTaxRateReconciliationHealthInsurerFeeAmount	336000000	USD
CY2016Q1	hum	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	20000000	USD
CY2016Q1	hum	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Per Share Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPerShareAmount	0.12
CY2014	hum	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options And Restricted Stock Vesting EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptionsAndRestrictedStockVesting	30000000	USD
CY2015	hum	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options And Restricted Stock Vesting EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptionsAndRestrictedStockVesting	34000000	USD
CY2016	hum	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options And Restricted Stock Vesting EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptionsAndRestrictedStockVesting	53000000	USD
CY2014	hum	Favorable Medical Claims Reserve Development Related To Prior Fiscal Years FavorableMedicalClaimsReserveDevelopmentRelatedToPriorFiscalYears	518000000	USD
CY2015	hum	Favorable Medical Claims Reserve Development Related To Prior Fiscal Years FavorableMedicalClaimsReserveDevelopmentRelatedToPriorFiscalYears	236000000	USD
CY2016	hum	Favorable Medical Claims Reserve Development Related To Prior Fiscal Years FavorableMedicalClaimsReserveDevelopmentRelatedToPriorFiscalYears	582000000	USD
CY2016	hum	General Obligation Bonds As Percentage Of Tax Exempt Municipal Securities That Were Not Pre Refunded GeneralObligationBondsAsPercentageOfTaxExemptMunicipalSecuritiesThatWereNotPreRefunded	0.46
CY2014	hum	Government And Health Plan Member Subsidies Amount GovernmentAndHealthPlanMemberSubsidiesAmount	9700000000	USD
CY2015	hum	Government And Health Plan Member Subsidies Amount GovernmentAndHealthPlanMemberSubsidiesAmount	12300000000	USD
CY2016	hum	Government And Health Plan Member Subsidies Amount GovernmentAndHealthPlanMemberSubsidiesAmount	13400000000	USD
CY2015	hum	Health Care Reform Premium Deficiency Current Period Results Increase Decrease In Pdr Liability HealthCareReformPremiumDeficiencyCurrentPeriodResultsIncreaseDecreaseInPDRLiability	0	USD
CY2016	hum	Health Care Reform Premium Deficiency Current Period Results Increase Decrease In Pdr Liability HealthCareReformPremiumDeficiencyCurrentPeriodResultsIncreaseDecreaseInPDRLiability	-384000000	USD
CY2014Q4	hum	Health Care Reform Premium Deficiency Reserve HealthCareReformPremiumDeficiencyReserve	0	USD
CY2015Q4	hum	Health Care Reform Premium Deficiency Reserve HealthCareReformPremiumDeficiencyReserve	176000000	USD
CY2016Q4	hum	Health Care Reform Premium Deficiency Reserve HealthCareReformPremiumDeficiencyReserve	0	USD
CY2015	hum	Health Care Reform Premium Deficiency Reserve Change In Estimate HealthCareReformPremiumDeficiencyReserveChangeInEstimate	176000000	USD
CY2016Q2	hum	Health Care Reform Premium Deficiency Reserve Change In Estimate HealthCareReformPremiumDeficiencyReserveChangeInEstimate	208000000	USD
CY2016	hum	Health Care Reform Premium Deficiency Reserve Change In Estimate HealthCareReformPremiumDeficiencyReserveChangeInEstimate	208000000	USD
CY2013Q4	hum	Health Care Reform Provisionfor Premium Deficiency HealthCareReformProvisionforPremiumDeficiency	0	USD
CY2014Q4	hum	Health Care Reform Provisionfor Premium Deficiency HealthCareReformProvisionforPremiumDeficiency	0	USD
CY2015Q4	hum	Health Care Reform Provisionfor Premium Deficiency HealthCareReformProvisionforPremiumDeficiency	176000000	USD
CY2016Q4	hum	Health Care Reform Provisionfor Premium Deficiency HealthCareReformProvisionforPremiumDeficiency	0	USD
CY2014	hum	Health Care Reform Provisionfor Premium Deficiency1 HealthCareReformProvisionforPremiumDeficiency1	0	USD
CY2015	hum	Health Care Reform Provisionfor Premium Deficiency1 HealthCareReformProvisionforPremiumDeficiency1	176000000	USD
CY2016	hum	Health Care Reform Provisionfor Premium Deficiency1 HealthCareReformProvisionforPremiumDeficiency1	-176000000	USD
CY2016Q4	hum	Increase To Future Policy Benefits Payable IncreaseToFuturePolicyBenefitsPayable	659000000	USD
CY2016Q4	hum	Increase To Reinsurance Recoverable IncreaseToReinsuranceRecoverable	154000000	USD
CY2016	hum	Long Term Insurance Reserve Strengthening Expense LongTermInsuranceReserveStrengtheningExpense	505000000	USD
CY2016	hum	Maximum Carrying Value Of Reinsurance Recoverables For Number Of Reinsurers MaximumCarryingValueOfReinsuranceRecoverablesForNumberOfReinsurers	76000000	USD
CY2014	hum	Maximum Deductibility Of Annual Compensation Per Employee As Mandated By Health Reforms MaximumDeductibilityOfAnnualCompensationPerEmployeeAsMandatedByHealthReforms	500000	USD
CY2015	hum	Maximum Deductibility Of Annual Compensation Per Employee As Mandated By Health Reforms MaximumDeductibilityOfAnnualCompensationPerEmployeeAsMandatedByHealthReforms	500000	USD
CY2016	hum	Maximum Deductibility Of Annual Compensation Per Employee As Mandated By Health Reforms MaximumDeductibilityOfAnnualCompensationPerEmployeeAsMandatedByHealthReforms	500000	USD
CY2016	hum	Maximum Percentage Of Any General Obligation Bonds In One State MaximumPercentageOfAnyGeneralObligationBondsInOneState	0.11
CY2014	hum	Military Services Benefit Expense Benefit MilitaryServicesBenefitExpenseBenefit	11000000	USD
CY2015	hum	Military Services Benefit Expense Benefit MilitaryServicesBenefitExpenseBenefit	12000000	USD
CY2016	hum	Military Services Benefit Expense Benefit MilitaryServicesBenefitExpenseBenefit	8000000	USD
CY2016	hum	Minimum Age Required For Retirement Eligibility As Related To Our Equity Award Program MinimumAgeRequiredForRetirementEligibilityAsRelatedToOurEquityAwardProgram	P55Y
CY2016	hum	Minimum Number Of Years Of Service For Retirement Eligibility As Related To Our Equity Award Program MinimumNumberOfYearsOfServiceForRetirementEligibilityAsRelatedToOurEquityAwardProgram	P5Y
CY2015Q4	hum	Net Asset Liability Deferred Acquisition Cost NetAssetLiabilityDeferredAcquisitionCost	135000000	USD
CY2016Q4	hum	Net Asset Liability Deferred Acquisition Cost NetAssetLiabilityDeferredAcquisitionCost	119000000	USD
CY2015Q4	hum	Net Asset Liability Future Policy Benefits Payable NetAssetLiabilityFuturePolicyBenefitsPayable	2215000000	USD
CY2016Q4	hum	Net Asset Liability Future Policy Benefits Payable NetAssetLiabilityFuturePolicyBenefitsPayable	2896000000	USD
CY2016Q4	hum	Net Operating Lease Commitment Thereafter NetOperatingLeaseCommitmentThereafter	78000000	USD
CY2016Q4	hum	Net Operating Lease Commitment Total NetOperatingLeaseCommitmentTotal	610000000	USD
CY2016Q4	hum	Net Operating Lease Commitment Within Year Five NetOperatingLeaseCommitmentWithinYearFive	45000000	USD
CY2016Q4	hum	Net Operating Lease Commitment Within Year Four NetOperatingLeaseCommitmentWithinYearFour	70000000	USD
CY2016Q4	hum	Net Operating Lease Commitment Within Year One NetOperatingLeaseCommitmentWithinYearOne	166000000	USD
CY2016Q4	hum	Net Operating Lease Commitment Within Year Three NetOperatingLeaseCommitmentWithinYearThree	112000000	USD
CY2016Q4	hum	Net Operating Lease Commitment Within Year Two NetOperatingLeaseCommitmentWithinYearTwo	139000000	USD
CY2016	hum	Number Of Days Notice For Employer Group To Cancel Short Duration Prepaid Health Services Policies NumberOfDaysNoticeForEmployerGroupToCancelShortDurationPrepaidHealthServicesPolicies	P30D
CY2016	hum	Number Of Reinsurers Comprising Other Reinsurance Recoverables Balance NumberOfReinsurersComprisingOtherReinsuranceRecoverablesBalance	18	Reinsurer
CY2016Q4	hum	Number Of Reinsurers Who Have Placed Cash And Securities In Trusts NumberOfReinsurersWhoHavePlacedCashAndSecuritiesInTrusts	3	Reinsurer
CY2016Q4	hum	Number Of Shares Of Our Common Stock Reserved For Issuance Under Our Defined Contribution Retirement Savings Plans NumberOfSharesOfOurCommonStockReservedForIssuanceUnderOurDefinedContributionRetirementSavingsPlans	2800000	shares
CY2012	hum	Operating Lease Rental Expenses Net OperatingLeaseRentalExpensesNet	212000000	USD
CY2015	hum	Operating Lease Rental Expenses Net OperatingLeaseRentalExpensesNet	176000000	USD
CY2016	hum	Operating Lease Rental Expenses Net OperatingLeaseRentalExpensesNet	153000000	USD
CY2015Q4	hum	Other Long Term Assets Deferred Acquisition Costs OtherLongTermAssetsDeferredAcquisitionCosts	135000000	USD
CY2016Q4	hum	Other Long Term Assets Deferred Acquisition Costs OtherLongTermAssetsDeferredAcquisitionCosts	119000000	USD
CY2015Q4	hum	Other Long Term Assets Future Policy Benefits Payable OtherLongTermAssetsFuturePolicyBenefitsPayable	0	USD
CY2016Q4	hum	Other Long Term Assets Future Policy Benefits Payable OtherLongTermAssetsFuturePolicyBenefitsPayable	0	USD
CY2015Q4	hum	Other Long Term Liabilities Deferred Acquisition Cost OtherLongTermLiabilitiesDeferredAcquisitionCost	0	USD
CY2016Q4	hum	Other Long Term Liabilities Deferred Acquisition Cost OtherLongTermLiabilitiesDeferredAcquisitionCost	0	USD
CY2016	hum	Percent Of Consolidated Premiums And Services Revenues Related To Long Duration Insurance Products PercentOfConsolidatedPremiumsAndServicesRevenuesRelatedToLongDurationInsuranceProducts	0.01
CY2016Q4	hum	Percentage Of Collateral Related To Prime Loan PercentageOfCollateralRelatedToPrimeLoan	0.99
CY2015Q4	hum	Percentage Of Corporate Securities Associated With Financial Services Industry PercentageOfCorporateSecuritiesAssociatedWithFinancialServicesIndustry	0.25
CY2016Q4	hum	Percentage Of Corporate Securities Associated With Financial Services Industry PercentageOfCorporateSecuritiesAssociatedWithFinancialServicesIndustry	0.23
CY2016	hum	Percentage Of Retirement And Savings Plan S Assets Invested In Our Common Stock As Compared To Company S Outstanding Shares At Year End PercentageOfRetirementAndSavingsPlanSAssetsInvestedInOurCommonStockAsComparedToCompanySOutstandingSharesAtYearEnd	0.02
CY2016	hum	Percentage Of Retirement And Savings Plan S Assets Invested In Our Company Common Stock PercentageOfRetirementAndSavingsPlanSAssetsInvestedInOurCompanyCommonStock	0.13
CY2016Q4	hum	Percentage Of Tax Exempt Securities PercentageOfTaxExemptSecurities	0.04
CY2016Q4	hum	Percentage Of Tax Exempt To Municipal Securities Classified As Pre Refunded PercentageOfTaxExemptToMunicipalSecuritiesClassifiedAsPreRefunded	0.08
CY2016Q4	hum	Percentage Of Total Debt Securities PercentageOfTotalDebtSecurities	0.98
CY2014	hum	Percentage Of Total Premium And Services Revenues Derived From Contracts With Federal Government PercentageOfTotalPremiumAndServicesRevenuesDerivedFromContractsWithFederalGovernment	0.73
CY2015	hum	Percentage Of Total Premium And Services Revenues Derived From Contracts With Federal Government PercentageOfTotalPremiumAndServicesRevenuesDerivedFromContractsWithFederalGovernment	0.73
CY2016	hum	Percentage Of Total Premium And Services Revenues Derived From Contracts With Federal Government PercentageOfTotalPremiumAndServicesRevenuesDerivedFromContractsWithFederalGovernment	0.75
CY2016	hum	Premiums Reduction Write Off Of Risk Corridor Receivables PremiumsReductionWriteOffOfRiskCorridorReceivables	583000000	USD
CY2014	hum	Share Repurchases Related To Employee Stock Based Compensation Awards Shares ShareRepurchasesRelatedToEmployeeStockBasedCompensationAwardsShares	400000	shares
CY2015	hum	Share Repurchases Related To Employee Stock Based Compensation Awards Shares ShareRepurchasesRelatedToEmployeeStockBasedCompensationAwardsShares	300000	shares
CY2016	hum	Share Repurchases Related To Employee Stock Based Compensation Awards Shares ShareRepurchasesRelatedToEmployeeStockBasedCompensationAwardsShares	600000	shares
CY2014	hum	Share Repurchases Related To Employee Stock Based Compensation Awards Value ShareRepurchasesRelatedToEmployeeStockBasedCompensationAwardsValue	42000000	USD
CY2015	hum	Share Repurchases Related To Employee Stock Based Compensation Awards Value ShareRepurchasesRelatedToEmployeeStockBasedCompensationAwardsValue	56000000	USD
CY2016	hum	Share Repurchases Related To Employee Stock Based Compensation Awards Value ShareRepurchasesRelatedToEmployeeStockBasedCompensationAwardsValue	104000000	USD
CY2016Q4	hum	Shares Of Retirement And Savings Plans Invested In Our Companys Common Stock SharesOfRetirementAndSavingsPlansInvestedInOurCompanysCommonStock	2500000	shares
CY2016	hum	Special Revenue Bonds As Percentage Of Tax Exempt Municipal Securities That Were Not Pre Refunded SpecialRevenueBondsAsPercentageOfTaxExemptMunicipalSecuritiesThatWereNotPreRefunded	0.54
CY2014	hum	Stock Based Compensation Expense Net Of Tax StockBasedCompensationExpenseNetOfTax	76000000	USD
CY2015	hum	Stock Based Compensation Expense Net Of Tax StockBasedCompensationExpenseNetOfTax	83000000	USD
CY2016	hum	Stock Based Compensation Expense Net Of Tax StockBasedCompensationExpenseNetOfTax	95000000	USD
CY2015Q4	hum	Trade Accounts Payable And Accrued Expenses Deferred Acquisition Cost TradeAccountsPayableAndAccruedExpensesDeferredAcquisitionCost	0	USD
CY2016Q4	hum	Trade Accounts Payable And Accrued Expenses Deferred Acquisition Cost TradeAccountsPayableAndAccruedExpensesDeferredAcquisitionCost	0	USD
CY2015Q4	hum	Trade Accounts Payable And Accrued Expenses Future Policy Benefits Payable TradeAccountsPayableAndAccruedExpensesFuturePolicyBenefitsPayable	64000000	USD
CY2016Q4	hum	Trade Accounts Payable And Accrued Expenses Future Policy Benefits Payable TradeAccountsPayableAndAccruedExpensesFuturePolicyBenefitsPayable	62000000	USD
CY2016	hum	Typical Term In Years Of Short Duration Employer Group Prepaid Health Services Policies TypicalTermInYearsOfShortDurationEmployerGroupPrepaidHealthServicesPolicies	P1Y
CY2016	hum	Uncommitted Incremental Loan Facility UncommittedIncrementalLoanFacility	250000000	USD
CY2016Q4	hum	Upper Limit Percentage Of Level Three Assets To Total Invested Assets UpperLimitPercentageOfLevelThreeAssetsToTotalInvestedAssets	0.001
CY2015Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	2212000000	USD
CY2016Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	2467000000	USD
CY2015Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1338000000	USD
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1690000000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	58000000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-66000000	USD
CY2015Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2530000000	USD
CY2016Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2562000000	USD
CY2014	us-gaap	Adjustment For Amortization AdjustmentForAmortization	121000000	USD
CY2015	us-gaap	Adjustment For Amortization AdjustmentForAmortization	93000000	USD
CY2016	us-gaap	Adjustment For Amortization AdjustmentForAmortization	77000000	USD
CY2014	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	98000000	USD
CY2015	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	109000000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	115000000	USD
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CY2016	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	2000000	USD
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CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	77000000	USD
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CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	748000	shares
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CY2015Q4	us-gaap	Assets Current AssetsCurrent	15711000000	USD
CY2016Q4	us-gaap	Assets Current AssetsCurrent	16190000000	USD
CY2015Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	218000000	USD
CY2016Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	168000000	USD
CY2015Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	126000000	USD
CY2016Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	196000000	USD
CY2015Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	9110000000	USD
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CY2016Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	9826000000	USD
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CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	9000000	USD
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CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	196000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	4810000000	USD
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	6967000000	USD
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CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	2426000000	USD
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CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	2734000000	USD
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CY2016Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	2110000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	7267000000	USD
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CY2015Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	1843000000	USD
CY2016Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	2203000000	USD
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CY2016	us-gaap	Dividends Dividends	172000000	USD
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CY2016	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
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CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	0	USD
CY2016	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	4000000	USD
CY2013Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	37000000	USD
CY2014Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	32000000	USD
CY2015Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	11000000	USD
CY2016Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	7000000	USD
CY2014	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	18000000	USD
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CY2014	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2015	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2016	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	7000000	USD
CY2016	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P9Y10M24D
CY2015Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	396000000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	473000000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	71000000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	14000000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	48000000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	52000000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	63000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	753000000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	753000000	USD
CY2016Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions FutureMinimumSubleaseRentalsSaleLeasebackTransactions	87000000	USD
CY2016Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Thereafter FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter	17000000	USD
CY2016Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within Five Years FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears	8000000	USD
CY2016Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within Four Years FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears	11000000	USD
CY2016Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within One Year FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear	19000000	USD
CY2016Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within Three Years FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears	14000000	USD
CY2016Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within Two Years FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears	18000000	USD
CY2014	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2015	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	270000000	USD
CY2016	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2014Q4	us-gaap	Goodwill Goodwill	3231000000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	3265000000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	3272000000	USD
CY2015	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	35000000	USD
CY2016	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	7000000	USD
CY2015	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	1000000	USD
CY2016	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2170000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2431000000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1552000000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1023000000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1155000000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	938000000	USD
CY2014	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	0	USD
CY2015	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	-67000000	USD
CY2016	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	0	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	759000000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	851000000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	543000000	USD
CY2014	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	22000000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	18000000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	30000000	USD
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	17000000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	19000000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	8000000	USD
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	48000000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	44000000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	41000000	USD
CY2014	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	27000000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	24000000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	20000000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1030000000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1179000000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	916000000	USD
CY2014	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	-69000000	USD
CY2015	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	-33000000	USD
CY2016	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	-89000000	USD
CY2014	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	64000000	USD
CY2015	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	2000000	USD
CY2016	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	71000000	USD
CY2014	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	155000000	USD
CY2015	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	3000000	USD
CY2016	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-84000000	USD
CY2014	us-gaap	Increase Decrease In Health Care Insurance Liabilities IncreaseDecreaseInHealthCareInsuranceLiabilities	582000000	USD
CY2015	us-gaap	Increase Decrease In Health Care Insurance Liabilities IncreaseDecreaseInHealthCareInsuranceLiabilities	501000000	USD
CY2016	us-gaap	Increase Decrease In Health Care Insurance Liabilities IncreaseDecreaseInHealthCareInsuranceLiabilities	-413000000	USD
CY2014	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	-919000000	USD
CY2015	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	-296000000	USD
CY2016	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	1093000000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	952000000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	872000000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-426000000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-42000000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-70000000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-162000000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	413000000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-129000000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	937000000	USD
CY2014	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	264000000	USD
CY2015	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	180000000	USD
CY2016	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	158000000	USD
CY2015Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	357000000	USD
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	280000000	USD
CY2014	us-gaap	Interest Expense InterestExpense	192000000	USD
CY2015	us-gaap	Interest Expense InterestExpense	186000000	USD
CY2016	us-gaap	Interest Expense InterestExpense	189000000	USD
CY2014	us-gaap	Interest Paid InterestPaid	143000000	USD
CY2014	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	1733000000	USD
CY2015	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2014	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	885000000	USD
CY2015	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1065000000	USD
CY2015	us-gaap	Interest Paid InterestPaid	187000000	USD
CY2016	us-gaap	Interest Paid InterestPaid	185000000	USD
CY2014	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	377000000	USD
CY2015	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	474000000	USD
CY2016	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	389000000	USD
CY2015Q4	us-gaap	Land Land	20000000	USD
CY2016Q4	us-gaap	Land Land	20000000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	226000000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	201000000	USD
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	179000000	USD
CY2015Q4	us-gaap	Liabilities Liabilities	14332000000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	14711000000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24678000000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	25396000000	USD
CY2014	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2015	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2016	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	8152000000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	7822000000	USD
CY2013Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	3893000000	USD
CY2014Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	4475000000	USD
CY2015Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	4976000000	USD
CY2016Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	4563000000	USD
CY2015Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	2151000000	USD
CY2016Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	2834000000	USD
CY2014	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	32000000	USD
CY2015	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	-80000000	USD
CY2016	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	439000000	USD
CY2014	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	34357000000	USD
CY2015	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	39802000000	USD
CY2016	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	40852000000	USD
CY2014	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	3262000000	USD
CY2015	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	4041000000	USD
CY2016	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	4112000000	USD
CY2014	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	38123000000	USD
CY2015	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	44161000000	USD
CY2016	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	44736000000	USD
CY2013Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3893000000	USD
CY2014Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	4397000000	USD
CY2015Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	4715000000	USD
CY2016Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	4487000000	USD
CY2016Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2016Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1000000000	USD
CY2015Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3794000000	USD
CY2016Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3792000000	USD
CY2015Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	645000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1936000000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	1147000000	USD
CY2016	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	26000000	USD
CY2016Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	138000000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	4712000000	USD
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	3438000000	USD
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2475000000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2226000000	USD
CY2016Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	750000000	USD
CY2016Q4	us-gaap	Minimum Net Capital Required1 MinimumNetCapitalRequired1	9000000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-758000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-552000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	732000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-63000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	320000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1362000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1618000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	868000000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	1276000000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	614000000	USD
CY2016	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	Segment
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	2362000000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	2347000000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	1741000000	USD
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	697000000	USD
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	185000000	USD
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	53000000	USD
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	81000000	USD
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	126000000	USD
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	157000000	USD
CY2016Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	95000000	USD
CY2012	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	14000000	USD
CY2015	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	25000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	65000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-165000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-124000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	20000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	146000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	96000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	13000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	93000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	61000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	7000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	53000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	35000000	USD
CY2014	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	72000000	USD
CY2015	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	1061000000	USD
CY2016	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2015	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	298000000	USD
CY2016	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	-2000000	USD
CY2014	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2409000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	122000000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-114000000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-101000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	78000000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-72000000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-63000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	44000000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-42000000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-38000000	USD
CY2015Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	235000000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	263000000	USD
CY2015Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	301000000	USD
CY2016Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	212000000	USD
CY2014	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	37619000000	USD
CY2015	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	43843000000	USD
CY2016	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	44964000000	USD
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	872000000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	385000000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	104000000	USD
CY2014	us-gaap	Payments Of Dividends PaymentsOfDividends	172000000	USD
CY2015	us-gaap	Payments Of Dividends PaymentsOfDividends	172000000	USD
CY2016	us-gaap	Payments Of Dividends PaymentsOfDividends	177000000	USD
CY2014	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2883000000	USD
CY2015	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	6739000000	USD
CY2016	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	6566000000	USD
CY2014	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	18000000	USD
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CY2015	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1000000	USD
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CY2015Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2722000000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	3195000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1384000000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1505000000	USD
CY2014	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	32000000	USD
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CY2013Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	0	USD
CY2014Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	78000000	USD
CY2015Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	85000000	USD
CY2016Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	76000000	USD
CY2015Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	668000000	USD
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CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	500000000	USD
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CY2015	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	1406000000	USD
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CY2014	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	7639000000	USD
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	7318000000	USD
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	7277000000	USD
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	98000000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	14000	shares
CY2015	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	23000000	USD
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	13000000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	109000000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	115000000	USD
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	99000000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	153000000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	253000000	USD
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	16400000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	342000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	111.28
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	32000000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	28000000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	18000000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	362000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	62000000	USD
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	835000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1022000	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	121.89
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	143.04
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	86.86
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	163.94
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	167.81
CY2016Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	32000000	USD
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y9M18D
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CY2015Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	299000000	USD
CY2016Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	300000000	USD
CY2016Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	850000000	USD
CY2015Q4	us-gaap	Statutory Accounting Practices Statutory Capital And Surplus Balance StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance	6600000000	USD
CY2016Q4	us-gaap	Statutory Accounting Practices Statutory Capital And Surplus Balance StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance	7700000000	USD
CY2015Q4	us-gaap	Statutory Accounting Practices Statutory Capital And Surplus Required StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired	4600000000	USD
CY2016Q4	us-gaap	Statutory Accounting Practices Statutory Capital And Surplus Required StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired	4800000000	USD
CY2016	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	161000	shares
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CY2014	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	52000000	USD
CY2014	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	7000000	USD
CY2015	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	10000000	USD
CY2016	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	9000000	USD
CY2014Q2	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1000000000	USD
CY2014Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	2000000000	USD
CY2014Q2	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	816000000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	9316000000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	9646000000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	10346000000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	10685000000	USD
CY2014	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	38641000000	USD
CY2015	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	44397000000	USD
CY2016	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	45318000000	USD
CY2014	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	518000000	USD
CY2015	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	236000000	USD
CY2016	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	582000000	USD
CY2015Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	50084043	shares
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	49189811	shares
CY2015Q4	us-gaap	Treasury Stock Value TreasuryStockValue	3292000000	USD
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	3298000000	USD
CY2014	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	872000000	USD
CY2015	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	385000000	USD
CY2016	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	104000000	USD
CY2016Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On First Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary	184000000	USD
CY2016Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fourth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary	5000000	USD
CY2016Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Second Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary	108000000	USD
CY2016Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Third Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary	48000000	USD
CY2016Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Due After Five Years UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears	3000000	USD
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	155874000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	151142000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	150917000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	154187000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	149455000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	149375000	shares
CY2016	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">REPORTING ENTITY</font></div><div style="line-height:120%;padding-bottom:12px;text-indent:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Nature of Operations</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Humana Inc., headquartered in Louisville, Kentucky, is a leading health and well-being company focused on making it easy for people to achieve their best health with clinical excellence through coordinated care. Our strategy integrates care delivery, the member experience, and clinical and consumer insights to encourage engagement, behavior change, proactive clinical outreach and wellness for the millions of people we serve across the country.</font><font style="font-family:inherit;font-size:10pt;"> References throughout these notes to consolidated financial statements to “we,” “us,” “our,” “Company,” and “Humana,” mean Humana Inc. and its subsidiaries. We derived approximately </font><font style="font-family:inherit;font-size:10pt;">75%</font><font style="font-family:inherit;font-size:10pt;"> of our total premiums and services revenue from contracts with the federal government in </font><font style="font-family:inherit;font-size:10pt;">2016</font><font style="font-family:inherit;font-size:10pt;">, including </font><font style="font-family:inherit;font-size:10pt;">14%</font><font style="font-family:inherit;font-size:10pt;"> related to our federal government contracts with the Centers for Medicare and Medicaid Services, or CMS, to provide health insurance coverage for individual Medicare Advantage members in Florida. CMS is the federal government’s agency responsible for administering the Medicare program.</font></div></div>

Files In Submission

Name	View Source	Status
0000049071-17-000175-index-headers.html	Edgar Link	pending
0000049071-17-000175-index.html	Edgar Link	pending
0000049071-17-000175.txt	Edgar Link	pending
0000049071-17-000175-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
hum-2016123110x8kxex991.htm	Edgar Link	pending
hum-2016123110x8kxex992.htm	Edgar Link	pending
hum-20161231x10x8kxex23.htm	Edgar Link	pending
hum-20161231x10x8kxex993.htm	Edgar Link	pending
hum-20161231x10x8kxex994.htm	Edgar Link	pending
hum-20171207.xml	Edgar Link	completed
hum-20171207.xsd	Edgar Link	pending
hum-20171207_cal.xml	Edgar Link	unprocessable
hum-20171207_def.xml	Edgar Link	unprocessable
hum-20171207_lab.xml	Edgar Link	unprocessable
hum-20171207_pre.xml	Edgar Link	unprocessable
hum20161231-10x8k.htm	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$HUM
HUMANA INC Stock $hum

2016 Form 8-K Financial Statement

#000004907117000175 Filed on December 14, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HUM HUMANA INC Stock $hum

2016 Form 8-K Financial Statement

#000004907117000175 Filed on December 14, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HUM
HUMANA INC Stock $hum