Annual report pursuant to Section 13 and 15(d)

Contingencies - Additional Information (Detail)

v3.10.0.1
Contingencies - Additional Information (Detail)
 12 Months Ended
Aug. 23, 2018
Plaintiff
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Aug. 31, 2017
USD ($)
Jul. 31, 2016
USD ($)
May 10, 2013
USD ($)
May 07, 2010
USD ($)
Loss Contingencies [Line Items]              
Other assets   $ 221,800,000 $ 250,300,000        
Prepaid expenses and other current assets   153,800,000 $ 147,000,000        
Deductible for product liability insurance   12,500,000          
Putative Class Plaintiffs [Member]              
Loss Contingencies [Line Items]              
Number of plaintiffs | Plaintiff 4            
Pending Litigation due to Plaintiffs Arbitration [Member]              
Loss Contingencies [Line Items]              
Number of plaintiffs | Plaintiff 4            
Herbalife International of America, Inc., [Member] | U.S. Federal Trade Commission [Member]              
Loss Contingencies [Line Items]              
Settlement amount paid for consent order   $ 200,000,000          
Third-party monitoring by independent compliance auditor, period   7 years          
Federal Revenue Office of Brazil [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service   $ 6,400,000          
Mexican Tax Administration Service [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service           $ 14,900,000 $ 58,300,000
Surety bond through insurance company to guarantee payment of tax assessment   18,400,000          
Other assets current and non current   33,100,000          
Other assets   24,300,000          
Prepaid expenses and other current assets   8,800,000          
Loss related to other assets   0          
Brazilian ICMS [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service   6,300,000          
Surety bond through insurance company to guarantee payment of tax assessment   11,200,000          
Brazilian ICMS [Member] | State of Sao Paulo [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service       $ 15,400,000 $ 41,500,000    
Brazilian ICMS [Member] | State of Rio de Janeiro [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service   9,100,000          
Indian VAT Authorities [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service   9,000,000          
South Korean Customs Authority [Member] | Other Noncurrent Assets [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service   $ 31,800,000