$HUM
HUMANA INC Stock $hum

$hum Overview Financials Valuation SEC Filings Company Website

2014 Q4 Form 10-K Financial Statement

#000004907116000117 Filed on February 18, 2016

Income Statement

Concept	2014 Q4	2014 Q3	2014 Q2
Revenue	$12.33B	$12.24B	$12.22B
YoY Change	21.02%	18.6%	18.42%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin		$1.898B	$1.835B
YoY Change		23.25%	25.6%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$124.0M	$112.0M	$106.0M
YoY Change	8.77%	5.66%	1.92%
% of Gross Profit
Operating Expenses	$11.96B	$1.898B	$1.835B
YoY Change	17.21%	23.25%	25.6%
Operating Profit		$589.0M	$681.0M
YoY Change		-5.15%	-1.16%
Interest Expense	-$84.00M	$38.00M	$35.00M
YoY Change	140.0%	8.57%	0.0%
% of Operating Profit		6.45%	5.14%
Other Income/Expense, Net
YoY Change
Pretax Income	$287.0M	$551.0M	$646.0M
YoY Change	-685.71%	-5.97%	-1.22%
Income Tax	$142.0M	$261.0M	$302.0M
% Of Pretax Income	49.48%	47.37%	46.75%
Net Earnings	$145.0M	$290.0M	$344.0M
YoY Change	-583.33%	-21.2%	-18.1%
Net Earnings / Revenue	1.18%	2.37%	2.81%
Basic Earnings Per Share	$0.96	$1.87	$2.22
Diluted Earnings Per Share	$0.94	$1.85	$2.19
COMMON SHARES
Basic Shares Outstanding		154.5M shares	155.4M shares
Diluted Shares Outstanding		156.2M shares	157.0M shares

Balance Sheet

Concept	2014 Q4	2014 Q3	2014 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$9.533B	$10.79B	$9.158B
YoY Change	3.31%	13.41%	0.91%
Cash & Equivalents	$1.935B	$2.705B	$1.593B
Short-Term Investments	$7.598B	$8.088B	$7.565B
Other Short-Term Assets	$4.007B	$3.839B	$2.854B
YoY Change	88.83%	72.0%	45.61%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$15.54B	$15.64B	$14.09B
YoY Change	26.31%	24.36%	11.55%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.228B	$1.349B	$1.289B
YoY Change	0.82%	14.32%	13.77%
Goodwill	$3.231B	$3.695B	$3.696B
YoY Change	-0.68%	-0.57%	1.59%
Intangibles	$440.0M	$607.0M	$629.0M
YoY Change	-36.51%	-16.16%	-6.81%
Long-Term Investments	$9.547B	$10.04B	$9.460B
YoY Change	-2.58%	-8.54%	1.44%
Other Assets	$1.583B	$1.704B	$2.155B
YoY Change	-10.77%	0.41%	28.35%
Total Long-Term Assets	$7.991B	$8.695B	$9.035B
YoY Change	-5.26%	4.38%	9.91%
TOTAL ASSETS
Total Short-Term Assets	$15.54B	$15.64B	$14.09B
Total Long-Term Assets	$7.991B	$8.695B	$9.035B
Total Assets	$23.53B	$24.33B	$23.12B
YoY Change	13.47%	16.4%	10.9%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.095B	$2.068B	$2.559B
YoY Change	15.05%	2.89%	17.71%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$267.0M	$294.0M
YoY Change	-100.0%	-2.2%	19.51%
Long-Term Debt Due		$512.0M
YoY Change
Total Short-Term Liabilities	$7.471B	$7.769B	$7.880B
YoY Change	18.16%	18.59%	16.4%
LONG-TERM LIABILITIES
Long-Term Debt	$3.825B	$3.826B	$2.595B
YoY Change	47.12%	46.98%	-0.42%
Other Long-Term Liabilities	$236.0M	$312.0M	$360.0M
YoY Change	-18.34%	-1.27%	10.09%
Total Long-Term Liabilities	$4.061B	$4.138B	$2.955B
YoY Change	40.57%	41.76%	0.75%
TOTAL LIABILITIES
Total Short-Term Liabilities	$7.471B	$7.769B	$7.880B
Total Long-Term Liabilities	$4.061B	$4.138B	$2.955B
Total Liabilities	$13.88B	$14.21B	$13.12B
YoY Change	21.56%	25.75%	13.97%
SHAREHOLDERS EQUITY
Retained Earnings	$9.916B	$9.813B	$9.567B
YoY Change	10.89%	8.86%	10.12%
Common Stock	$2.363B	$2.433B	$2.409B
YoY Change	2.74%	6.99%	8.42%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$2.856B	$2.354B	$2.236B
YoY Change	37.04%	25.35%	25.34%
Treasury Stock Shares	48.35M shares	44.51M shares	43.54M shares
Shareholders Equity	$9.646B	$10.13B	$10.00B
YoY Change
Total Liabilities & Shareholders Equity	$23.53B	$24.33B	$23.12B
YoY Change	13.47%	16.4%	10.9%

Cashflow Statement

Concept	2014 Q4	2014 Q3	2014 Q2
OPERATING ACTIVITIES
Net Income	$145.0M	$290.0M	$344.0M
YoY Change	-583.33%	-21.2%	-18.1%
Depreciation, Depletion And Amortization	$124.0M	$112.0M	$106.0M
YoY Change	8.77%	5.66%	1.92%
Cash From Operating Activities	$193.0M	$954.0M	-$200.0M
YoY Change	-1306.25%	-16.83%	-215.61%
INVESTING ACTIVITIES
Capital Expenditures	-$167.0M	-$145.0M	-$110.0M
YoY Change	27.48%	17.89%	13.4%
Acquisitions
YoY Change
Other Investing Activities	$472.0M	-$627.0M	$685.0M
YoY Change	413.04%	-28.1%	100.88%
Cash From Investing Activities	$305.0M	-$772.0M	$575.0M
YoY Change	-882.05%	-22.41%	135.66%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.268B	930.0M	-444.0M
YoY Change	1945.16%	-323.56%	50.0%
NET CHANGE
Cash From Operating Activities	193.0M	954.0M	-200.0M
Cash From Investing Activities	305.0M	-772.0M	575.0M
Cash From Financing Activities	-1.268B	930.0M	-444.0M
Net Change In Cash	-770.0M	1.112B	-69.00M
YoY Change	558.12%	-521.21%	-157.02%
FREE CASH FLOW
Cash From Operating Activities	$193.0M	$954.0M	-$200.0M
Capital Expenditures	-$167.0M	-$145.0M	-$110.0M
Free Cash Flow	$360.0M	$1.099B	-$90.00M
YoY Change	213.04%	-13.46%	-133.33%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-12-31
CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0000049071
CY2016Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	148303389	shares
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2015Q2	dei	Entity Public Float EntityPublicFloat	28626230036	USD
CY2015	dei	Entity Registrant Name EntityRegistrantName	HUMANA INC
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2015	dei	Trading Symbol TradingSymbol	HUM
CY2014	hum	Adjustment To Future Policy Benefits Assuming Unrealized Gains On Investments Realized And Reinvested At Current Yields AdjustmentToFuturePolicyBenefitsAssumingUnrealizedGainsOnInvestmentsRealizedAndReinvestedAtCurrentYields	123000000	USD
CY2015	hum	Adjustment To Future Policy Benefits Assuming Unrealized Gains On Investments Realized And Reinvested At Current Yields AdjustmentToFuturePolicyBenefitsAssumingUnrealizedGainsOnInvestmentsRealizedAndReinvestedAtCurrentYields	0	USD
CY2015	hum	Amount Held In Cash And Securities In Trust At Least Equal To Recoverable From Reinsurer AmountHeldInCashAndSecuritiesInTrustAtLeastEqualToRecoverableFromReinsurer	104000000	USD
CY2013	hum	Benefit Expenses Associated With Military Services And Provisions Associated With Future Policy Benefits BenefitExpensesAssociatedWithMilitaryServicesAndProvisionsAssociatedWithFuturePolicyBenefits	327000000	USD
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
CY2013	hum	Benefits Payable Acquired Balances BenefitsPayableAcquiredBalances	5000000	USD
CY2014	hum	Benefits Payable Acquired Balances BenefitsPayableAcquiredBalances	0	USD
CY2015	hum	Benefits Payable Acquired Balances BenefitsPayableAcquiredBalances	0	USD
CY2015	hum	Closing Stock Price ClosingStockPrice	178.51
CY2015	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
CY2015	hum	Consumer Discounts On Brand Name Prescription Drugs ConsumerDiscountsOnBrandNamePrescriptionDrugs	0.5
CY2014Q4	hum	Deferred Tax Assets Deferred Policy Acquisition Cost DeferredTaxAssetsDeferredPolicyAcquisitionCost	57000000	USD
CY2015Q4	hum	Deferred Tax Assets Deferred Policy Acquisition Cost DeferredTaxAssetsDeferredPolicyAcquisitionCost	64000000	USD
CY2014Q4	hum	Deferred Tax Assets Future Policy Benefits Payable DeferredTaxAssetsFuturePolicyBenefitsPayable	320000000	USD
CY2015Q4	hum	Deferred Tax Assets Future Policy Benefits Payable DeferredTaxAssetsFuturePolicyBenefitsPayable	200000000	USD
CY2014Q4	hum	Deferred Tax Liabilities Depreciable Property And Intangible Assets DeferredTaxLiabilitiesDepreciablePropertyAndIntangibleAssets	346000000	USD
CY2015Q4	hum	Deferred Tax Liabilities Depreciable Property And Intangible Assets DeferredTaxLiabilitiesDepreciablePropertyAndIntangibleAssets	363000000	USD
CY2013	hum	Depreciation And Amortization Classified As Benefit Expense DepreciationAndAmortizationClassifiedAsBenefitExpense	93000000	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
CY2013	hum	Depreciation And Amortization Income Statement DepreciationAndAmortizationIncomeStatement	333000000	USD
CY2014	hum	Depreciation And Amortization Income Statement DepreciationAndAmortizationIncomeStatement	333000000	USD
CY2015	hum	Depreciation And Amortization Income Statement DepreciationAndAmortizationIncomeStatement	355000000	USD
CY2014Q4	hum	Disposal Group Including Discontinued Operation Net Assets DisposalGroupIncludingDiscontinuedOperationNetAssets	737000000	USD
CY2015Q2	hum	Disposal Group Including Discontinued Operation Net Assets DisposalGroupIncludingDiscontinuedOperationNetAssets	763000000	USD
CY2015	hum	Dividends To Parent Without Prior State Regulatory Approval DividendsToParentWithoutPriorStateRegulatoryApproval	493000000	USD
CY2013	hum	Effective Income Tax Rate Reconciliation Health Insurer Fee Amount EffectiveIncomeTaxRateReconciliationHealthInsurerFeeAmount	0	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
CY2013	hum	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options And Restricted Stock Vesting EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptionsAndRestrictedStockVesting	20000000	USD
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
CY2013	hum	Favorable Medical Claims Reserve Development Related To Prior Fiscal Years FavorableMedicalClaimsReserveDevelopmentRelatedToPriorFiscalYears	474000000	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
CY2015	hum	General Obligation Bonds As Percentage Of Tax Exempt Municipal Securities That Were Not Pre Refunded GeneralObligationBondsAsPercentageOfTaxExemptMunicipalSecuritiesThatWereNotPreRefunded	0.42
CY2013	hum	Government And Health Plan Member Subsidies Amount GovernmentAndHealthPlanMemberSubsidiesAmount	7300000000	USD
CY2014	hum	Government And Health Plan Member Subsidies Amount GovernmentAndHealthPlanMemberSubsidiesAmount	9700000000	USD
CY2015	hum	Government And Health Plan Member Subsidies Amount GovernmentAndHealthPlanMemberSubsidiesAmount	12300000000	USD
CY2013	hum	Health Care Reform Provisionfor Premium Deficiency HealthCareReformProvisionforPremiumDeficiency	0	USD
CY2014	hum	Health Care Reform Provisionfor Premium Deficiency HealthCareReformProvisionforPremiumDeficiency	0	USD
CY2015Q4	hum	Health Care Reform Provisionfor Premium Deficiency HealthCareReformProvisionforPremiumDeficiency	176000000	USD
CY2015	hum	Health Care Reform Provisionfor Premium Deficiency HealthCareReformProvisionforPremiumDeficiency	176000000	USD
CY2013Q4	hum	Increase To Future Policy Benefits Payable IncreaseToFuturePolicyBenefitsPayable	350000000	USD
CY2013Q4	hum	Increase To Reinsurance Recoverable IncreaseToReinsuranceRecoverable	107000000	USD
CY2015	hum	Maximum Carrying Value Of Reinsurance Recoverables For Number Of Reinsurers MaximumCarryingValueOfReinsuranceRecoverablesForNumberOfReinsurers	85000000	USD
CY2013	hum	Maximum Deductibility Of Annual Compensation Per Employee As Mandated By Health Reforms MaximumDeductibilityOfAnnualCompensationPerEmployeeAsMandatedByHealthReforms	500000	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
CY2015	hum	Maximum Percentage Of Any General Obligation Bonds In One State MaximumPercentageOfAnyGeneralObligationBondsInOneState	0.11
CY2013	hum	Military Services Benefit Expense Benefit MilitaryServicesBenefitExpenseBenefit	-27000000	USD
CY2014	hum	Military Services Benefit Expense Benefit MilitaryServicesBenefitExpenseBenefit	11000000	USD
CY2015	hum	Military Services Benefit Expense Benefit MilitaryServicesBenefitExpenseBenefit	12000000	USD
CY2015	hum	Minimum Age Required For Retirement Eligibility As Related To Our Equity Award Program MinimumAgeRequiredForRetirementEligibilityAsRelatedToOurEquityAwardProgram	P55Y
CY2015	hum	Minimum Number Of Years Of Service For Retirement Eligibility As Related To Our Equity Award Program MinimumNumberOfYearsOfServiceForRetirementEligibilityAsRelatedToOurEquityAwardProgram	P5Y
CY2014Q4	hum	Net Asset Liability Deferred Acquisition Cost NetAssetLiabilityDeferredAcquisitionCost	167000000	USD
CY2015Q4	hum	Net Asset Liability Deferred Acquisition Cost NetAssetLiabilityDeferredAcquisitionCost	135000000	USD
CY2014Q4	hum	Net Asset Liability Future Policy Benefits Payable NetAssetLiabilityFuturePolicyBenefitsPayable	2417000000	USD
CY2015Q4	hum	Net Asset Liability Future Policy Benefits Payable NetAssetLiabilityFuturePolicyBenefitsPayable	2215000000	USD
CY2015Q4	hum	Net Operating Lease Commitment Thereafter NetOperatingLeaseCommitmentThereafter	45000000	USD
CY2015Q4	hum	Net Operating Lease Commitment Total NetOperatingLeaseCommitmentTotal	588000000	USD
CY2015Q4	hum	Net Operating Lease Commitment Within Year Five NetOperatingLeaseCommitmentWithinYearFive	47000000	USD
CY2015Q4	hum	Net Operating Lease Commitment Within Year Four NetOperatingLeaseCommitmentWithinYearFour	83000000	USD
CY2015Q4	hum	Net Operating Lease Commitment Within Year One NetOperatingLeaseCommitmentWithinYearOne	157000000	USD
CY2015Q4	hum	Net Operating Lease Commitment Within Year Three NetOperatingLeaseCommitmentWithinYearThree	113000000	USD
CY2015Q4	hum	Net Operating Lease Commitment Within Year Two NetOperatingLeaseCommitmentWithinYearTwo	143000000	USD
CY2015	hum	Number Of Days Notice For Employer Group To Cancel Short Duration Prepaid Health Services Policies NumberOfDaysNoticeForEmployerGroupToCancelShortDurationPrepaidHealthServicesPolicies	P30D
CY2015	hum	Number Of Reinsurers Comprising Other Reinsurance Recoverables Balance NumberOfReinsurersComprisingOtherReinsuranceRecoverablesBalance	18	Reinsurer
CY2015Q4	hum	Number Of Reinsurers Who Have Placed Cash And Securities In Trusts NumberOfReinsurersWhoHavePlacedCashAndSecuritiesInTrusts	3	Reinsurer
CY2015Q4	hum	Number Of Shares Of Our Common Stock Reserved For Issuance Under Our Defined Contribution Retirement Savings Plans NumberOfSharesOfOurCommonStockReservedForIssuanceUnderOurDefinedContributionRetirementSavingsPlans	3400000	shares
CY2011	hum	Operating Lease Rental Expenses Net OperatingLeaseRentalExpensesNet	216000000	USD
CY2014	hum	Operating Lease Rental Expenses Net OperatingLeaseRentalExpensesNet	212000000	USD
CY2015	hum	Operating Lease Rental Expenses Net OperatingLeaseRentalExpensesNet	176000000	USD
CY2014Q4	hum	Other Long Term Assets Deferred Acquisition Costs OtherLongTermAssetsDeferredAcquisitionCosts	167000000	USD
CY2015Q4	hum	Other Long Term Assets Deferred Acquisition Costs OtherLongTermAssetsDeferredAcquisitionCosts	135000000	USD
CY2014Q4	hum	Other Long Term Assets Future Policy Benefits Payable OtherLongTermAssetsFuturePolicyBenefitsPayable	0	USD
CY2015Q4	hum	Other Long Term Assets Future Policy Benefits Payable OtherLongTermAssetsFuturePolicyBenefitsPayable	0	USD
CY2014Q4	hum	Other Long Term Liabilities Deferred Acquisition Cost OtherLongTermLiabilitiesDeferredAcquisitionCost	0	USD
CY2015Q4	hum	Other Long Term Liabilities Deferred Acquisition Cost OtherLongTermLiabilitiesDeferredAcquisitionCost	0	USD
CY2015	hum	Percent Of Consolidated Premiums And Services Revenues Related To Long Duration Insurance Products PercentOfConsolidatedPremiumsAndServicesRevenuesRelatedToLongDurationInsuranceProducts	0.01
CY2015Q4	hum	Percentage Of Collateral Related To Prime Loan PercentageOfCollateralRelatedToPrimeLoan	0.99
CY2014Q4	hum	Percentage Of Corporate Securities Associated With Financial Services Industry PercentageOfCorporateSecuritiesAssociatedWithFinancialServicesIndustry	0.21
CY2015Q4	hum	Percentage Of Corporate Securities Associated With Financial Services Industry PercentageOfCorporateSecuritiesAssociatedWithFinancialServicesIndustry	0.25
CY2015	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
CY2015	hum	Percentage Of Retirement And Savings Plan S Assets Invested In Our Company Common Stock PercentageOfRetirementAndSavingsPlanSAssetsInvestedInOurCompanyCommonStock	0.13
CY2015Q4	hum	Percentage Of Tax Exempt Securities PercentageOfTaxExemptSecurities	0.06
CY2015Q4	hum	Percentage Of Tax Exempt To Municipal Securities Classified As Pre Refunded PercentageOfTaxExemptToMunicipalSecuritiesClassifiedAsPreRefunded	0.07
CY2015Q4	hum	Percentage Of Total Debt Securities PercentageOfTotalDebtSecurities	0.98
CY2013	hum	Percentage Of Total Premium And Services Revenues Derived From Contracts With Federal Government PercentageOfTotalPremiumAndServicesRevenuesDerivedFromContractsWithFederalGovernment	0.75
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
CY2015Q4	hum	Provision For Premium Deficiency Netof Tax ProvisionForPremiumDeficiencyNetofTax	112000000	USD
CY2015Q4	hum	Provision For Premium Deficiency Per Diluted Share ProvisionForPremiumDeficiencyPerDilutedShare	0.74
CY2013	hum	Share Repurchases Related To Employee Stock Based Compensation Awards Shares ShareRepurchasesRelatedToEmployeeStockBasedCompensationAwardsShares	300000	shares
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
CY2013	hum	Share Repurchases Related To Employee Stock Based Compensation Awards Value ShareRepurchasesRelatedToEmployeeStockBasedCompensationAwardsValue	29000000	USD
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
CY2015Q4	hum	Shares Of Retirement And Savings Plans Invested In Our Companys Common Stock SharesOfRetirementAndSavingsPlansInvestedInOurCompanysCommonStock	2500000	shares
CY2015	hum	Special Revenue Bonds As Percentage Of Tax Exempt Municipal Securities That Were Not Pre Refunded SpecialRevenueBondsAsPercentageOfTaxExemptMunicipalSecuritiesThatWereNotPreRefunded	0.58
CY2015Q4	hum	Statutory Accounting Practices Statutory Capitaland Surplus Required Expected Contributions StatutoryAccountingPracticesStatutoryCapitalandSurplusRequiredExpectedContributions	450000000	USD
CY2013	hum	Stock Based Compensation Expense Net Of Tax StockBasedCompensationExpenseNetOfTax	70000000	USD
CY2014	hum	Stock Based Compensation Expense Net Of Tax StockBasedCompensationExpenseNetOfTax	76000000	USD
CY2015	hum	Stock Based Compensation Expense Net Of Tax StockBasedCompensationExpenseNetOfTax	83000000	USD
CY2014Q4	hum	Trade Accounts Payable And Accrued Expenses Deferred Acquisition Cost TradeAccountsPayableAndAccruedExpensesDeferredAcquisitionCost	0	USD
CY2015Q4	hum	Trade Accounts Payable And Accrued Expenses Deferred Acquisition Cost TradeAccountsPayableAndAccruedExpensesDeferredAcquisitionCost	0	USD
CY2014Q4	hum	Trade Accounts Payable And Accrued Expenses Future Policy Benefits Payable TradeAccountsPayableAndAccruedExpensesFuturePolicyBenefitsPayable	68000000	USD
CY2015Q4	hum	Trade Accounts Payable And Accrued Expenses Future Policy Benefits Payable TradeAccountsPayableAndAccruedExpensesFuturePolicyBenefitsPayable	64000000	USD
CY2015	hum	Typical Term In Years Of Short Duration Employer Group Prepaid Health Services Policies TypicalTermInYearsOfShortDurationEmployerGroupPrepaidHealthServicesPolicies	P1Y
CY2015	hum	Uncommitment Incremental Loan Facility UncommitmentIncrementalLoanFacility	250000000	USD
CY2015Q4	hum	Upper Limit Percentage Of Level Three Assets To Total Invested Assets UpperLimitPercentageOfLevelThreeAssetsToTotalInvestedAssets	0.001
CY2014Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	2095000000	USD
CY2015Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	2212000000	USD
CY2014Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1679000000	USD
CY2015Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1338000000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	223000000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	58000000	USD
CY2014Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2330000000	USD
CY2015Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2530000000	USD
CY2013	us-gaap	Adjustment For Amortization AdjustmentForAmortization	117000000	USD
CY2014	us-gaap	Adjustment For Amortization AdjustmentForAmortization	121000000	USD
CY2015	us-gaap	Adjustment For Amortization AdjustmentForAmortization	93000000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	92000000	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
CY2013	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	8000000	USD
CY2014	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	13000000	USD
CY2015	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	17000000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	98000000	USD
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CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	93000000	USD
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	704000	shares
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CY2015	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	415000	shares
CY2014Q4	us-gaap	Assets Assets	23527000000	USD
CY2015Q4	us-gaap	Assets Assets	24705000000	USD
CY2014Q4	us-gaap	Assets Current AssetsCurrent	15536000000	USD
CY2015Q4	us-gaap	Assets Current AssetsCurrent	15711000000	USD
CY2014Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	943000000	USD
CY2015Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2014Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	516000000	USD
CY2015Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	218000000	USD
CY2014Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	41000000	USD
CY2015Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	126000000	USD
CY2014Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	9547000000	USD
CY2015Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	9110000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	9072000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	9018000000	USD
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CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	42000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	41000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	126000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	1413000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	4810000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	8000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	84000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	496000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	4326000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	917000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	484000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	1244000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	1264000000	USD
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CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	1871000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	2304000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	2384000000	USD
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CY2015Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	3152000000	USD
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CY2014Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	1949000000	USD
CY2015Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	1843000000	USD
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CY2015	us-gaap	Depreciation Depreciation	354000000	USD
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CY2015	us-gaap	Dividends Dividends	170000000	USD
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CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	1000000	USD
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CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2013	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	0	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	0	USD
CY2013	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	5000000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	20000000	USD
CY2013	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	1000000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	0	USD
CY2012Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	38000000	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
CY2013	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	196000000	USD
CY2014	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	18000000	USD
CY2015	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	38000000	USD
CY2015	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P9Y9M18D
CY2014Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	425000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	396000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	78000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	47000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	51000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	62000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	71000000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	865000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	753000000	USD
CY2015Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions FutureMinimumSubleaseRentalsSaleLeasebackTransactions	109000000	USD
CY2015Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Thereafter FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter	45000000	USD
CY2015Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within Five Years FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears	7000000	USD
CY2015Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within Four Years FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears	11000000	USD
CY2015Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within One Year FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear	16000000	USD
CY2015Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within Three Years FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears	14000000	USD
CY2015Q4	us-gaap	Future Minimum Sublease Rentals Sale Leaseback Transactions Within Two Years FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears	16000000	USD
CY2013	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	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
CY2013Q4	us-gaap	Goodwill Goodwill	3253000000	USD
CY2014Q4	us-gaap	Goodwill Goodwill	3231000000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	3265000000	USD
CY2014	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	19000000	USD
CY2015	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	35000000	USD
CY2014	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	-1000000	USD
CY2014	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	40000000	USD
CY2015	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	1000000	USD
CY2013	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2014	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2015	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1921000000	USD
CY2014Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	686000000	USD
CY2014Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	646000000	USD
CY2014Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	551000000	USD
CY2014Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	287000000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2170000000	USD
CY2015Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	744000000	USD
CY2015Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	793000000	USD
CY2015Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	648000000	USD
CY2015Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	246000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2431000000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	690000000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1023000000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1155000000	USD
CY2013	us-gaap	Income Tax Reconciliation Disposition Of Business IncomeTaxReconciliationDispositionOfBusiness	0	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
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	672000000	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
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	6000000	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
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	6000000	USD
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	17000000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	19000000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	32000000	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
CY2013	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	26000000	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
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	734000000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1030000000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1179000000	USD
CY2013	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	79000000	USD
CY2014	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	-69000000	USD
CY2015	us-gaap	Increase Decrease In Book Overdrafts IncreaseDecreaseInBookOverdrafts	-33000000	USD
CY2013	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-42000000	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
CY2013	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-24000000	USD
CY2014	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	155000000	USD
CY2015	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	3000000	USD
CY2013	us-gaap	Increase Decrease In Health Care Insurance Liabilities IncreaseDecreaseInHealthCareInsuranceLiabilities	109000000	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
CY2013	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	-150000000	USD
CY2014	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	-919000000	USD
CY2015	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	-296000000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	330000000	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
CY2013	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-93000000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-42000000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	2347000000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-70000000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	313000000	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
CY2013	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	251000000	USD
CY2014	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	264000000	USD
CY2015	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	180000000	USD
CY2014Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	440000000	USD
CY2015Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	357000000	USD
CY2013	us-gaap	Interest Expense InterestExpense	140000000	USD
CY2014	us-gaap	Interest Expense InterestExpense	192000000	USD
CY2015	us-gaap	Interest Expense InterestExpense	186000000	USD
CY2013	us-gaap	Interest Paid InterestPaid	146000000	USD
CY2014	us-gaap	Interest Paid InterestPaid	143000000	USD
CY2015	us-gaap	Interest Paid InterestPaid	187000000	USD
CY2013	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	375000000	USD
CY2014	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	377000000	USD
CY2015	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	474000000	USD
CY2014Q4	us-gaap	Land Land	18000000	USD
CY2015Q4	us-gaap	Land Land	20000000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	227000000	USD
CY2014	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	226000000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	201000000	USD
CY2014Q4	us-gaap	Liabilities Liabilities	13881000000	USD
CY2015Q4	us-gaap	Liabilities Liabilities	14359000000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	23527000000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24705000000	USD
CY2013	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	9000000	USD
CY2014	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2015	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	7471000000	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	8152000000	USD
CY2014Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	206000000	USD
CY2015Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2012Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	3775000000	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
CY2014Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	2349000000	USD
CY2015Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	2151000000	USD
CY2013	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	354000000	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
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	29103000000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	2061000000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	2362000000	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
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	3021000000	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
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	32237000000	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
CY2012Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	3775000000	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	Line Of Credit LineOfCredit	0	USD
CY2015	us-gaap	Line Of Credit Facility Covenant Terms LineOfCreditFacilityCovenantTerms	The terms of the credit agreement include standard provisions related to conditions of borrowing, including a customary material adverse effect clause which could limit our ability to borrow additional funds. In addition, the credit agreement contains customary restrictive and financial covenants as well as customary events of default, including financial covenants regarding the maintenance of a minimum level of net worth of $7.8 billion at December 31, 2014 and a maximum leverage ratio of 3.0:1. We are in compliance with the financial covenants, with actual net worth of $9.6 billion and actual leverage ratio of 1.4:1, as measured in accordance with the credit agreement as of December 31, 2014.
CY2015Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	999000000	USD
CY2014Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3825000000	USD
CY2015Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3821000000	USD
CY2014Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	631000000	USD
CY2015Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	645000000	USD
CY2015Q4	us-gaap	Minimum Net Capital Required1 MinimumNetCapitalRequired1	8500000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-702000000	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
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1182000000	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
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1716000000	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
CY2013	us-gaap	Net Income Loss NetIncomeLoss	1231000000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	368000000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	344000000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	290000000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	145000000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	1147000000	USD
CY2015Q1	us-gaap	Net Income Loss NetIncomeLoss	430000000	USD
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	431000000	USD
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	314000000	USD
CY2015Q4	us-gaap	Net Income Loss NetIncomeLoss	101000000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	1276000000	USD
CY2015	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	Segment
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	872000000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	385000000	USD
CY2013	us-gaap	Payments Of Dividends PaymentsOfDividends	168000000	USD
CY2014	us-gaap	Payments Of Dividends PaymentsOfDividends	172000000	USD
CY2015	us-gaap	Payments Of Dividends PaymentsOfDividends	172000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	697000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	173000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	54000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	94000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	127000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	159000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	90000000	USD
CY2011	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	11000000	USD
CY2014	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	14000000	USD
CY2015	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	25000000	USD
CY2015Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	126000000	USD
CY2014Q4	us-gaap	Other Assets Current OtherAssetsCurrent	4007000000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	4712000000	USD
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1583000000	USD
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2502000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-228000000	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
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	22000000	USD
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CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	48000000	USD
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CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	121.89
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	76.25
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CY2014Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
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CY2015Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	900000000	USD
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CY2013	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-474000000	USD
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CY2014Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	48347541	shares
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CY2015	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;">73%</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;">2015</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
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0000049071-16-000117-index.html	Edgar Link	pending
0000049071-16-000117.txt	Edgar Link	pending
0000049071-16-000117-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
hum-20151231.xml	Edgar Link	completed
hum-20151231.xsd	Edgar Link	pending
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$HUM
HUMANA INC Stock $hum

2014 Q4 Form 10-K Financial Statement

#000004907116000117 Filed on February 18, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HUM HUMANA INC Stock $hum

2014 Q4 Form 10-K Financial Statement

#000004907116000117 Filed on February 18, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HUM
HUMANA INC Stock $hum