Quarterly report pursuant to Section 13 or 15(d)

Contingencies - Additional Information (Detail)

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Contingencies - Additional Information (Detail)
Person in Millions
 6 Months Ended
Jun. 30, 2015
USD ($)
Person
Dec. 31, 2014
USD ($)
May. 10, 2013
USD ($)
May. 07, 2010
USD ($)
Sep. 30, 2009
USD ($)
Loss Contingencies [Line Items]          
Deductible for product liability insurance $ 15,000,000        
Surety bond through insurance company to guarantee payment of tax assessment 20,400,000        
Other assets $ 147,100,000 $ 152,800,000      
Terms of settlement agreement Under the terms of the settlement, the Company would (i) pay $15 million into a fund to be distributed to qualified claimants and (ii) accept up to a maximum amount of $2.5 million in product returns from qualified claimants. The court granted preliminary approval of the settlement on December 2, 2014 and conditionally certified a class. The court granted final approval of the settlement on May 14, 2015 and the final judgment was entered June 19, 2015.        
Bostick, et al., v. Herbalife Int'l of Am., Inc., et al. [Member]          
Loss Contingencies [Line Items]          
Payment to qualified claimants $ 15,000,000        
Amount of product returns from qualified claimants 2,500,000        
Escrow account $ 15,000,000        
United States [Member]          
Loss Contingencies [Line Items]          
Number of persons in settlement class | Person 1.5        
Federal Revenue Office of Brazil [Member]          
Loss Contingencies [Line Items]          
Tax assessment received relating to withholding/contributions to Company's Members during 2004         $ 2,700,000
Mexican Tax Administration Service [Member]          
Loss Contingencies [Line Items]          
Assessment amount from tax administration service     $ 19,000,000 $ 73,000,000  
Other assets $ 55,400,000        
Loss related to other assets 0        
Brazilian ICMS [Member]          
Loss Contingencies [Line Items]          
Other assets 15,600,000        
Loss related to other assets $ 0