Annual report pursuant to Section 13 and 15(d)

Segment Information - Schedule of Entity-Wide Information, Revenue from External Customers by Products and Services (Detail)

v3.25.0.1
Segment Information - Schedule of Entity-Wide Information, Revenue from External Customers by Products and Services (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Revenue from External Customer [Line Items]      
Total net sales $ 4,993.1 $ 5,062.4 $ 5,204.4
Weight Management [Member]      
Revenue from External Customer [Line Items]      
Total net sales 2,768.1 2,851.7 2,954.2
Targeted Nutrition [Member]      
Revenue from External Customer [Line Items]      
Total net sales 1,484.3 1,480.0 1,512.7
Energy, Sports, and Fitness [Member]      
Revenue from External Customer [Line Items]      
Total net sales 572.2 560.3 550.6
Outer Nutrition [Member]      
Revenue from External Customer [Line Items]      
Total net sales 83.6 82.5 85.8
Literature, Promotional and Other [Member]      
Revenue from External Customer [Line Items]      
Total net sales $ 84.9 $ 87.9 $ 101.1