Quarterly report pursuant to Section 13 or 15(d)

Contingencies - Additional Information (Detail)

v3.19.3
Contingencies - Additional Information (Detail)
 3 Months Ended 9 Months Ended
Oct. 31, 2019
USD ($)
Aug. 23, 2018
Plaintiff
Sep. 30, 2019
USD ($)
Sep. 30, 2019
USD ($)
Sep. 27, 2019
USD ($)
Dec. 31, 2018
USD ($)
Aug. 31, 2017
USD ($)
Jul. 31, 2016
USD ($)
Loss Contingencies [Line Items]                
Other assets     $ 214,400,000 $ 214,400,000   $ 221,800,000    
Prepaid expenses and other current assets     153,600,000 153,600,000   $ 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      
China Marketing Plan SEC Investigation [Member] | Subsequent Event [Member]                
Loss Contingencies [Line Items]                
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     13,700,000 $ 13,700,000        
Mexican Tax Administration Service [Member]                
Loss Contingencies [Line Items]                
Recognized loss related to tax matters       0        
Accrued liability related to tax matters     19,000,000.0 19,000,000.0        
Other assets current and non current     30,000,000.0 30,000,000.0        
Other assets     18,900,000 18,900,000        
Prepaid expenses and other current assets     11,100,000 11,100,000        
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 19,000,000.0        
Brazilian ICMS [Member]                
Loss Contingencies [Line Items]                
Assessment amount from tax administration service     6,000,000.0 6,000,000.0        
Surety bond through insurance company to guarantee payment of tax assessment     10,800,000 10,800,000        
Brazilian ICMS [Member] | State of Sao Paulo [Member]                
Loss Contingencies [Line Items]                
Assessment amount from tax administration service             $ 14,300,000 $ 38,600,000
Brazilian ICMS [Member] | State of Rio de Janeiro [Member]                
Loss Contingencies [Line Items]                
Assessment amount from tax administration service     8,500,000 8,500,000        
Indian VAT Authorities [Member]                
Loss Contingencies [Line Items]                
Assessment amount from tax administration service     10,200,000 10,200,000        
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     29,600,000 29,600,000        
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     $ 9,700,000 $ 9,700,000