Document and Entity Information - shares
6 Months Ended
Jun. 30, 2019
Jul. 31, 2019
Cover [Abstract]    
Entity Registrant Name NU SKIN ENTERPRISES INC  
Entity Central Index Key 0001021561  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   55,546,590
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 001-12421  
Entity Tax Identification Number 87-0565309  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 75 West Center St  
Entity Address, City or Town Provo  
Entity Address, State or Province UT  
Entity Address, Postal Zip Code 84601  
City Area Code 801  
Local Phone Number 345-1000  
Title of 12(b) Security Class A Common Stock, $.001 par value  
Trading Symbol NUS  
Security Exchange Name NYSE