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Share-Based Compensation - Additional Information (Detail) (USD $)
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12 Months Ended |
1 Months Ended |
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Dec. 31, 2014
Plans
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Dec. 31, 2013
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Dec. 31, 2012
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Mar. 31, 2008
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of share-based compensation plans |
6hlf_NumberOfShareBasedCompensationPlan
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| Common shares authorized under 2014 Stock Incentive Plan |
5,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
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| Common shares remain for future issuance under share-based compensation plans |
6,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
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| Realized income tax benefit for all awards |
$ 16,600,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
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$ 10,400,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
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$ 9,500,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
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| Excess tax benefit |
10,400,000us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
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15,600,000us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
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29,700,000us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
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| Awards granted |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
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| Total vesting date fair value of stock units |
9,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
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7,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
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24,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
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| Percent of fair market value for which eligible employees can purchase common shares under employee stock purchase plan |
85.00%hlf_PercentageOfPurchaseOfCommonSharesAtFairMarketValueOfCommonShare
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| Reserved for issuance under employee stock purchase plan |
2,000,000hlf_IssuanceOfEmployeeStockPurchasePlan
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| Future issuance of employee stock purchase plan |
1,800,000hlf_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlansFutureIssuance
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| Independent Director Stock Units [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Additional awards |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
/ us-gaap_TitleOfIndividualAxis
= hlf_IndependentDirectorMember
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| Awards vest, percentage |
25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_TitleOfIndividualAxis
= hlf_IndependentDirectorMember
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| Chairman and Chief Executive Officer [Member] | First Three Years of Vesting Period [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Awards vest, percentage |
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30.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_TitleOfIndividualAxis
= hlf_ChairmanAndChiefExecutiveOfficerMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheOneMember
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| Chairman and Chief Executive Officer [Member] | Fourth Year of Vesting Period [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Awards vest, percentage |
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10.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_TitleOfIndividualAxis
= hlf_ChairmanAndChiefExecutiveOfficerMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheTwoMember
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| Grant Date March 2008 [Member] | Chairman and Chief Executive Officer [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted stock unit awards to Chairman and Chief Executive Officer vesting |
Over a four-year period at a rate of 30% during each of the first three years and 10% during the fourth year.
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| Grant Date February 2009 [Member] | Chairman and Chief Executive Officer [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted stock unit awards to Chairman and Chief Executive Officer vesting |
The Company granted stock units and SARs to certain employees subject to continued service, one-third of which vest on the third anniversary of the date of grant, one-third of which vest on the fourth anniversary of the date of grant, and the remaining one-third of which vest on the fifth anniversary of the date of grant.
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| First Succeeding Year [Member] | Performance conditions [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Awards vest, percentage |
20.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_StatementScenarioAxis
= hlf_FirstSucceedingYearMember
/ us-gaap_VestingAxis
= hlf_PerformanceConditionsMember
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| Second Succeeding Year [Member] | Performance conditions [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Awards vest, percentage |
20.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_StatementScenarioAxis
= hlf_SecondSucceedingYearMember
/ us-gaap_VestingAxis
= hlf_PerformanceConditionsMember
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| Third Succeeding Year [Member] | Performance conditions [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Awards vest, percentage |
60.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_StatementScenarioAxis
= hlf_ThirdSucceedingYearMember
/ us-gaap_VestingAxis
= hlf_PerformanceConditionsMember
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| SARs [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Contractual term |
10 years
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| Vesting period beginning from the grant date |
5 years
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| Awards granted |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
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| SARs [Member] | Incentive Plan Stock Units Other [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting period beginning from the grant date |
3 years
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| Stock Options [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Contractual term |
10 years
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| Vesting period beginning from the grant date |
5 years
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| Stock Units [Member] | Chairman and Chief Executive Officer [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting period beginning from the grant date |
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4 years
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| Market Condition Target One [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock price appreciation rate |
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10.00%hlf_StockPriceAppreciationRate
/ us-gaap_AwardTypeAxis
= hlf_MarketConditionTargetOneMember
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| Market Condition Target 2 [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock price appreciation rate |
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15.00%hlf_StockPriceAppreciationRate
/ us-gaap_AwardTypeAxis
= hlf_MarketConditionTargetTwoMember
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| Market condition awards [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation expense |
0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_MarketConditionAwardsMember
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0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_MarketConditionAwardsMember
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700,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_MarketConditionAwardsMember
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| Total intrinsic value of awards exercised for options and SARs |
0hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_MarketConditionAwardsMember
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0hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_MarketConditionAwardsMember
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0hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_MarketConditionAwardsMember
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| Service condition awards [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation expense |
27,900,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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24,600,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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22,700,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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| Unrecognized compensation cost on non-vested stock awards |
36,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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| Unrecognized compensation cost on non-vested stock awards, weighted-average period of recognition |
1 year 4 months 24 days
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| Weighted-average grant date fair value of SARs granted |
$ 25.24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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$ 30.57us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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$ 15.36us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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| Total intrinsic value of awards exercised for options and SARs |
63,600,000hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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16,100,000hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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98,600,000hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_ServiceConditionAwardsMember
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| Performance condition awards [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation expense |
13,300,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_PerformanceAwardMember
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300,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_PerformanceAwardMember
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| Unrecognized compensation cost on non-vested stock awards |
16,800,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= hlf_PerformanceAwardMember
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| Unrecognized compensation cost on non-vested stock awards, weighted-average period of recognition |
1 year 8 months 12 days
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| Awards granted |
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0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= hlf_PerformanceAwardMember
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| Weighted-average grant date fair value of SARs granted |
$ 25.98us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= hlf_PerformanceAwardMember
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$ 33.04us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= hlf_PerformanceAwardMember
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| Total intrinsic value of awards exercised for options and SARs |
0hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_PerformanceAwardMember
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0hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_PerformanceAwardMember
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0hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_PerformanceAwardMember
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| Market and performance condition awards [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation expense |
4,500,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_MarketAndPerformanceConditionAwardsMember
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4,500,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_MarketAndPerformanceConditionAwardsMember
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4,600,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlf_MarketAndPerformanceConditionAwardsMember
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| Awards granted |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= hlf_MarketAndPerformanceConditionAwardsMember
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0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= hlf_MarketAndPerformanceConditionAwardsMember
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0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= hlf_MarketAndPerformanceConditionAwardsMember
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| Total intrinsic value of awards exercised for options and SARs |
$ 0hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_MarketAndPerformanceConditionAwardsMember
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$ 0hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_MarketAndPerformanceConditionAwardsMember
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$ 0hlf_IntrinsicValueOfAwardsExercisedForOptionsAndSars
/ us-gaap_AwardTypeAxis
= hlf_MarketAndPerformanceConditionAwardsMember
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| Management Plan [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Additional awards |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
/ us-gaap_PlanNameAxis
= hlf_ManagementIncentivePlanMember
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| 2004 Stock Incentive Plan [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Additional awards |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
/ us-gaap_PlanNameAxis
= hlf_StockIncentivePlan2004Member
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| 2005 Stock Incentive Plan [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Additional awards |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
/ us-gaap_PlanNameAxis
= hlf_StockIncentivePlanYearTwoThousandFiveMember
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| Incentive Plan Stock Units [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Contractual term |
3 years
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| Vesting period beginning from the grant date |
3 years
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