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UNCERTAIN TAX POSITIONS (Details) | 9 Months Ended
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Sep. 30, 2017
UNCERTAIN TAX POSITIONS [Abstract] |
Statute period for transfer pricing related issues | 10 years

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- Definition Statute period for transfer pricing related issues in certain countries in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. + References No definition available. + Details
Name: | nus_StatutePeriodForTransferPricingRelatedIssues
Namespace Prefix: | nus_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_IncomeTaxUncertaintiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration