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Segment Information - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Detail) (USD $) In Millions, unless otherwise specified
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3 Months Ended |
12 Months Ended |
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Dec. 31, 2014
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Sep. 30, 2014
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Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Contribution Margin |
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| Total Contribution Margin |
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$ 2,504.6hlf_ContributionsMargin
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$ 2,364.4hlf_ContributionsMargin
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$ 1,921.1hlf_ContributionsMargin
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| Selling, general and administrative expense |
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1,991.1us-gaap_SellingGeneralAndAdministrativeExpense
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1,629.1us-gaap_SellingGeneralAndAdministrativeExpense
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1,259.7us-gaap_SellingGeneralAndAdministrativeExpense
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| Interest expense |
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91.7us-gaap_InterestExpenseDebt
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26.6us-gaap_InterestExpenseDebt
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16.7us-gaap_InterestExpenseDebt
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| Interest income |
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12.5us-gaap_InvestmentIncomeInterest
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8.0us-gaap_InvestmentIncomeInterest
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6.2us-gaap_InvestmentIncomeInterest
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| Other expense, net |
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13.0us-gaap_OtherNonoperatingIncomeExpense
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| Income before income taxes |
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421.3us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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716.7us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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650.9us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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| Income taxes |
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112.6us-gaap_IncomeTaxExpenseBenefit
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189.2us-gaap_IncomeTaxExpenseBenefit
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186.9us-gaap_IncomeTaxExpenseBenefit
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| Net income |
103.3us-gaap_NetIncomeLoss
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11.3us-gaap_NetIncomeLoss
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119.5us-gaap_NetIncomeLoss
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74.6us-gaap_NetIncomeLoss
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123.5us-gaap_NetIncomeLoss
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142.0us-gaap_NetIncomeLoss
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143.1us-gaap_NetIncomeLoss
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118.9us-gaap_NetIncomeLoss
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308.7us-gaap_NetIncomeLoss
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527.5us-gaap_NetIncomeLoss
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464.0us-gaap_NetIncomeLoss
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| United States [Member] |
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| Contribution Margin |
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| Total Contribution Margin |
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373.1hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_US
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367.9hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_US
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359.5hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_US
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| Mexico [Member] |
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| Contribution Margin |
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| Total Contribution Margin |
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251.7hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_MX
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251.7hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_MX
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205.6hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_MX
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| South Korea [Member] |
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| Contribution Margin |
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| Total Contribution Margin |
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227.6hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_KR
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214.3hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_KR
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199.4hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_KR
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| Others [Member] |
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| Contribution Margin |
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| Total Contribution Margin |
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1,055.6hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = hlf_OtherCountriesMember
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1,107.8hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = hlf_OtherCountriesMember
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906.5hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = hlf_OtherCountriesMember
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| Primary Reporting Segment [Member] |
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| Contribution Margin |
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| Total Contribution Margin |
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1,908.0hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = hlf_PrimaryReportingSegmentMember
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1,941.7hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = hlf_PrimaryReportingSegmentMember
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1,671.0hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = hlf_PrimaryReportingSegmentMember
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| China [Member] |
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| Contribution Margin |
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| Total Contribution Margin |
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$ 596.6hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_CN
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$ 422.7hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_CN
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$ 250.1hlf_ContributionsMargin / us-gaap_StatementGeographicalAxis = country_CN
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