|
Segment Information - Schedule of Entity-Wide Information, Revenue from External Customers by Products and Services (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2014
|
Mar. 31, 2013
|
|
| Revenue from External Customer [Line Items] | ||
| Net sales | $ 1,262,649 | $ 1,123,647 |
|
Weight Management [Member]
|
||
| Revenue from External Customer [Line Items] | ||
| Net sales | 807,600 | 711,600 |
|
Targeted Nutrition [Member]
|
||
| Revenue from External Customer [Line Items] | ||
| Net sales | 284,000 | 256,900 |
|
Energy, Sports and Fitness [Member]
|
||
| Revenue from External Customer [Line Items] | ||
| Net sales | 66,700 | 58,300 |
|
Outer Nutrition [Member]
|
||
| Revenue from External Customer [Line Items] | ||
| Net sales | 39,700 | 38,200 |
|
Literature, promotional and other [Member]
|
||
| Revenue from External Customer [Line Items] | ||
| Net sales | $ 64,600 | $ 58,600 |