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DERIVATIVE FINANCIAL INSTRUMENTS (Details)	3 Months Ended							3 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2015 Correct Out-of-Period Error Related to Certain Tax Effects of a Prior Period Net Investment Hedge [Member] USD ($)	Mar. 31, 2015 Accumulated Unrealized Gains (Losses) on Foreign Currency Cash Flow Hedges [Member] USD ($)	Dec. 31, 2014 Accumulated Unrealized Gains (Losses) on Foreign Currency Cash Flow Hedges [Member] USD ($)	Mar. 31, 2015 Accumulated Unrealized Gains (Losses) on Foreign Currency Cash Flow Hedges [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] USD ($)	Mar. 31, 2014 Accumulated Unrealized Gains (Losses) on Foreign Currency Cash Flow Hedges [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] USD ($)	Mar. 31, 2015 Accumulated Translation Adjustment [Member] USD ($)	Dec. 31, 2014 Accumulated Translation Adjustment [Member] USD ($)	Mar. 31, 2015 Forward Contracts [Member] Cash Flow Hedges [Member] USD ($)	Dec. 31, 2014 Forward Contracts [Member] Cash Flow Hedges [Member] USD ($)	Mar. 31, 2015 Forward Contracts [Member] Cash Flow Hedges [Member] Japanese Yen [Member] USD ($)	Mar. 31, 2015 Forward Contracts [Member] Cash Flow Hedges [Member] Japanese Yen [Member] JPY (¥)	Mar. 31, 2014 Forward Contracts [Member] Cash Flow Hedges [Member] Japanese Yen [Member] USD ($)	Mar. 31, 2014 Forward Contracts [Member] Cash Flow Hedges [Member] Japanese Yen [Member] JPY (¥)	Mar. 31, 2015 Forward Contracts [Member] Cash Flow Hedges [Member] Euros [Member] USD ($)	Mar. 31, 2015 Forward Contracts [Member] Cash Flow Hedges [Member] Euros [Member] EUR (€)	Mar. 31, 2014 Forward Contracts [Member] Cash Flow Hedges [Member] Euros [Member] EUR (€)	Sep. 30, 2013 Forward Contracts [Member] Cash Flow Hedges [Member] Euros [Member] USD ($)
Derivative [Line Items]
Notional amount														$ 15,000,000invest_DerivativeNotionalAmount / us-gaap_CurrencyAxis = currency_JPY / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember	¥ 1,800,000invest_DerivativeNotionalAmount / us-gaap_CurrencyAxis = currency_JPY / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember	$ 28,000,000invest_DerivativeNotionalAmount / us-gaap_CurrencyAxis = currency_JPY / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember	¥ 2,900,000,000invest_DerivativeNotionalAmount / us-gaap_CurrencyAxis = currency_JPY / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember	$ 7,500,000invest_DerivativeNotionalAmount / us-gaap_CurrencyAxis = currency_EUR / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember	€ 7,000,000invest_DerivativeNotionalAmount / us-gaap_CurrencyAxis = currency_EUR / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember	€ 11,000,000invest_DerivativeNotionalAmount / us-gaap_CurrencyAxis = currency_EUR / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember	$ 15,100,000invest_DerivativeNotionalAmount / us-gaap_CurrencyAxis = currency_EUR / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember
Fair value of hedges												0us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember	0us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue	543,332,000us-gaap_SalesRevenueGoodsGross	671,061,000us-gaap_SalesRevenueGoodsGross						1,300,000us-gaap_SalesRevenueGoodsGross / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember	400,000us-gaap_SalesRevenueGoodsGross / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	(61,976,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax		(51,521,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax		(7,800,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = nus_CorrectOutOfPeriodErrorRelatedToCertainTaxEffectsOfPriorPeriodNetInvestmentHedgeMember	700,000us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember	1,100,000us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember			(62,600,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedTranslationAdjustmentMember	(52,600,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedTranslationAdjustmentMember
Deferred tax assets	$ 36,400,000us-gaap_DeferredTaxAssetsLiabilitiesNet			$ 40,000,000us-gaap_DeferredTaxAssetsLiabilitiesNet	$ (7,800,000)us-gaap_DeferredTaxAssetsLiabilitiesNet / us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis = nus_CorrectOutOfPeriodErrorRelatedToCertainTaxEffectsOfPriorPeriodNetInvestmentHedgeMember

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Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Aggregate revenue during the period from sale of goods in the normal course of business, before deducting returns, allowances and discounts.

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