v2.4.0.8

Basis of Presentation - Additional Information (Detail) Share data in Millions, unless otherwise specified | 12 Months Ended |  | 12 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended |  | 12 Months Ended | 1 Months Ended |  | 12 Months Ended |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 USD ($) sqft | Dec. 31, 2012 VEF | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($) | Dec. 31, 2009 USD ($) | Dec. 31, 2012 Buildings [Member] USD ($) | Dec. 31, 2012 Land [Member] USD ($) | Feb. 28, 2011 Herbalife Venezuela [Member] USD ($) | Feb. 28, 2011 Herbalife Venezuela [Member] VEF | Mar. 31, 2011 Herbalife Venezuela [Member] USD ($) | Dec. 31, 2012 Herbalife Venezuela [Member] USD ($) | Dec. 31, 2011 Herbalife Venezuela [Member] USD ($) | Dec. 31, 2010 Herbalife Venezuela [Member] USD ($) | Dec. 31, 2009 Herbalife Venezuela [Member] USD ($) | May 31, 2010 Herbalife Venezuela [Member] | Dec. 31, 2012 Alternative Bolivar Exchange Mechanisms [Member] USD ($) | Dec. 31, 2011 Alternative Bolivar Exchange Mechanisms [Member] USD ($) | Jan. 31, 2010 Previous CADIVI Rate [Member] VEF | Dec. 31, 2010 CADIVI Rate [Member] | Dec. 31, 2010 CADIVI Rate [Member] Herbalife Venezuela [Member] General and administrative expenses [Member] USD ($) | Jun. 30, 2010 SITME Rate [Member] Herbalife Venezuela [Member] | Jun. 30, 2010 SITME Rate [Member] Herbalife Venezuela [Member] General and administrative expenses [Member] USD ($)
Subsidiary or Equity Method Investee [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Overstatement of fully reserved deferred income tax assets |  |  | $ 40,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency transaction losses | 16,700,000 |  | 11,400,000 | 7,300,000 |  |  |  |  |  | 1,300,000 |  |  |  | 15,100,000 |  | 4,800,000 | 1,200,000 |  |  |  |  |
Cash and cash equivalents | 333,534,000 |  | 258,775,000 | 190,550,000 | 150,801,000 |  |  |  |  |  | 99,200,000 | 34,800,000 |  |  |  |  |  |  |  |  |  |
Receivables from credit card company | 81,100,000 |  | 65,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Square footage of facility purchased | 800,000 | 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price of facility | 22,200,000 |  |  |  |  | 18,800,000 | 3,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives of long lived assets | Three to ten years | Three to ten years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful life of buildings |  |  |  |  |  | 40 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization of property, plant and equipment | 70,900,000 |  | 68,900,000 | 67,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Marketing related intangibles | 310,000,000 |  | 310,000,000 | 310,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 105,490,000 |  | 105,490,000 | 102,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in goodwill due to acquisition |  |  | 2,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets with finite lives are amortized over their expected lives | 4 years | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets with finite lives | 1,100,000 |  | 1,700,000 | 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization expense for finite life intangible assets | 600,000 |  | 600,000 | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Future amortization expense for 2013 | 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Future amortization expense for 2014 | 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Future amortization expense for 2015 | 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Future amortization expense for 2016 | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advertising costs | 42,300,000 |  | 38,400,000 | 30,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity grants, outstanding | 4.0 | 4.0 | 2.1 | 1.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period of receiving anticipated returns | 12 months | 12 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SITME can only be used for amount per day |  |  |  |  |  |  |  |  |  |  | 50,000 |  |  |  |  |  |  |  |  |  |  |
SITME can only be used for amount Per Month |  |  |  |  |  |  |  |  |  |  | 350,000 |  |  |  |  |  |  |  |  |  |  |
Period to use denominated bonds |  |  |  |  |  |  |  |  |  |  | 90 days |  |  |  |  |  |  |  |  |  |  |
Percentage of cumulative inflation rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |
Incremental costs related to the importation of products |  |  |  |  |  |  |  |  |  |  |  |  | 12,700,000 |  |  |  |  |  |  |  |  |
Official conversion rate for non-essential items, Bolivars per USD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.3 |  |  |  |
Official conversion rate for essential items, Bolivars per USD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.6 |  |  |  |
Foreign currency exchange rate, Bolivars per USD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.3 |  | 5.3 |
Net foreign exchange gain (pre-tax) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,800,000 |  | 4,000,000
Net (post-tax) foreign exchange gain |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,600,000
Parallel market rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.3 |  |  |  |  |  |  |
Face value of U.S. denominated bonds |  |  |  |  |  |  |  | 20,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire U.S. denominated bonds |  |  |  |  |  |  |  |  | 86,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of U.S. denominated bonds |  |  |  |  |  |  |  | 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average effective conversion rate |  |  |  |  |  |  |  | 5.7 | 5.7 |  |  |  |  |  |  |  |  |  |  |  |  |
Percent by which alternative legal exchange mechanism was less favorable than SITME |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 43.00% |  |  |  |  |  |
SITME rate for re-measurement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.3 |  |  |  |  |  |
Currency exchanged through alternative legal exchange mechanisms | 6,400,000 | 59,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net monetary Bolivars denominated assets and liabilities |  |  |  |  |  |  |  |  |  |  | $ 82,900,000 | $ 26,800,000 |  |  |  |  |  |  |  |  |  |
Subsidiary's net sales to Company's consolidated net sales, percentage |  |  |  |  |  |  |  |  |  |  | 4.00% | 2.00% | 2.00% |  |  |  |  |  |  |  |  |
Subsidiary asset as percentage of consolidated assets |  |  |  |  |  |  |  |  |  |  | 7.00% | 3.00% |  |  |  |  |  |  |  |  |  |

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