COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Loss Contingencies [Line Items]
Aggregate amount of assessments and disputed duties	$ 55.4

The aggregate amount of assessments and disputed duties, net of any recovery of consumption taxes.

No definition available.

Name:	nus_AggregateAmountOfAssessmentsAndDisputedDuties
Namespace Prefix:	nus_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant