Quarterly report pursuant to Section 13 or 15(d)

Contingencies - Additional Information (Detail)

v3.19.2
Contingencies - Additional Information (Detail)
 6 Months Ended
Aug. 23, 2018
Plaintiff
Jun. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
Aug. 31, 2017
USD ($)
Jul. 31, 2016
USD ($)
May 10, 2013
USD ($)
Loss Contingencies [Line Items]            
Other assets   $ 217,300,000 $ 221,800,000      
Prepaid expenses and other current assets   140,500,000 $ 153,800,000      
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          
China Marketing Plan SEC Investigation [Member]            
Loss Contingencies [Line Items]            
Civil penalty   20,000,000.0        
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   $ 15,900,000        
Mexican Tax Administration Service [Member]            
Loss Contingencies [Line Items]            
Assessment amount from tax administration service           $ 15,300,000
Surety bond through insurance company to guarantee payment of tax assessment   18,800,000        
Other assets current and non current   31,300,000        
Other assets   19,500,000        
Prepaid expenses and other current assets   11,800,000        
Loss related to other assets   0        
Brazilian ICMS [Member]            
Loss Contingencies [Line Items]            
Assessment amount from tax administration service   6,400,000        
Surety bond through insurance company to guarantee payment of tax assessment   11,300,000        
Brazilian ICMS [Member] | State of Sao Paulo [Member]            
Loss Contingencies [Line Items]            
Assessment amount from tax administration service       $ 15,500,000 $ 41,700,000  
Brazilian ICMS [Member] | State of Rio de Janeiro [Member]            
Loss Contingencies [Line Items]            
Assessment amount from tax administration service   9,200,000        
Indian VAT Authorities [Member]            
Loss Contingencies [Line Items]            
Assessment amount from tax administration service   10,400,000        
South Korean Customs Authority [Member] | Other Noncurrent Assets [Member] | Audit Period January 2011 through May 2013 [Member]            
Loss Contingencies [Line Items]            
Assessment amount from tax administration service   30,700,000        
South Korean Customs Authority [Member] | Other Noncurrent Assets [Member] | Audit Period May 2013 through December 2013 [Member]            
Loss Contingencies [Line Items]            
Assessment amount from tax administration service   $ 10,000,000.0