Annual report pursuant to Section 13 and 15(d)

Contingencies - Additional Information (Detail)

v3.20.4
Contingencies - Additional Information (Detail)
 12 Months Ended
Oct. 31, 2019
USD ($)
Aug. 23, 2018
Plaintiff
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2020
USD ($)
Sep. 27, 2019
USD ($)
Aug. 31, 2017
USD ($)
Jul. 31, 2016
USD ($)
Loss Contingencies [Line Items]                
Other assets     $ 273,500,000 $ 227,800,000        
Prepaid expenses and other current assets     145,700,000 132,900,000        
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         $ 123,000,000      
Loss contingency compliance self-reporting obligations term     three-year          
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     $ 10,600,000          
Selling, General and Administrative Expenses [Member]                
Loss Contingencies [Line Items]                
Accrued liability     83,000,000 40,000,000        
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     24,200,000          
Other assets     18,300,000          
Prepaid expenses and other current assets     5,900,000          
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     5,600,000          
Surety bond through insurance company to guarantee payment of tax assessment     9,700,000          
Brazilian ICMS [Member] | State of Sao Paulo [Member]                
Loss Contingencies [Line Items]                
Assessment amount from tax administration service             $ 11,500,000 $ 31,000,000.0
Brazilian ICMS [Member] | State of Rio de Janeiro [Member]                
Loss Contingencies [Line Items]                
Assessment amount from tax administration service     6,800,000          
Indian VAT Authorities [Member]                
Loss Contingencies [Line Items]                
Assessment amount from tax administration service     15,400,000          
Indian VAT Authorities [Member] | Transfer Pricing [Member]                
Loss Contingencies [Line Items]                
Assessment amount from tax administration service     13,500,000          
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     32,600,000          
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     10,700,000          
South Korean Customs Authority [Member] | Other Noncurrent Assets [Member] | Audit Period January 2014 through December 2014 [Member]                
Loss Contingencies [Line Items]                
Assessment amount from tax administration service     $ 16,500,000