v3.10.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2018
Oct. 31, 2018
Entity Information [Line Items]    
Entity Registrant Name NU SKIN ENTERPRISES INC  
Entity Central Index Key 0001021561  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Ex Transition Period false  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Common Class A [Member]    
Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding   55,549,288