Annual report pursuant to Section 13 and 15(d)

Contingencies - Additional Information (Detail)

v3.19.3.a.u2
Contingencies - Additional Information (Detail)
 12 Months Ended
Oct. 31, 2019
USD ($)
Aug. 23, 2018
Plaintiff
Dec. 31, 2019
USD ($)
Sep. 27, 2019
USD ($)
Dec. 31, 2018
USD ($)
Aug. 31, 2017
USD ($)
Jul. 31, 2016
USD ($)
Loss Contingencies [Line Items]              
Other assets     $ 227,800,000   $ 221,800,000    
Prepaid expenses and other current assets     132,900,000   $ 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          
SEC and DOJ Investigation [Member]              
Loss Contingencies [Line Items]              
Accrued liability     40,000,000        
China Marketing Plan SEC Investigation [Member]              
Loss Contingencies [Line Items]              
Civil penalty       $ 20,000,000      
Settlement amount $ 20,000,000            
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     $ 14,100,000        
Mexican Tax Administration Service [Member]              
Loss Contingencies [Line Items]              
Recognized loss related to tax matters     0        
Accrued liability     19,000,000.0        
Other assets current and non current     28,000,000.0        
Other assets     16,700,000        
Prepaid expenses and other current assets     11,300,000        
Mexican Tax Administration Service [Member] | Selling, General and Administrative Expenses [Member]              
Loss Contingencies [Line Items]              
Recognized loss related to tax matters     19,000,000.0        
Brazilian ICMS [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service     7,400,000        
Surety bond through insurance company to guarantee payment of tax assessment     12,400,000        
Brazilian ICMS [Member] | State of Sao Paulo [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service           $ 14,800,000 $ 40,000,000.0
Brazilian ICMS [Member] | State of Rio de Janeiro [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service     8,800,000        
Indian VAT Authorities [Member]              
Loss Contingencies [Line Items]              
Assessment amount from tax administration service     10,100,000        
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