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Network
180 - Disclosure - Income Taxes - Schedule of Reconciliation of Unrecognized Tax Benefits (Detail)
(http://www.watson.com/taxonomy/role/DisclosureIncomeTaxesScheduleOfReconciliationOfUnrecognizedTaxBenefits)
TableSignificant Change in Unrecognized Tax Benefits is Reasonably Possible [Table]
Slicers (applies to each fact value in each table cell)
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]Period [Axis]
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
2010-01-01 - 2010-12-31
Balance at the beginning of the year
71,200,000  
68,000,000  
72,200,000  
Increases for current year tax positions
4,300,000  
8,500,000  
5,900,000  
Increases for prior year tax positions
6,700,000  
11,000,000  
20,100,000  
Increases due to acquisitions
41,900,000  
 
 
Decreases for prior year tax positions
(10,400,000) 
(14,900,000) 
(27,500,000) 
Settlements
(9,300,000) 
(1,200,000) 
(2,300,000) 
Lapse of applicable statue of limitations
(1,300,000) 
(200,000) 
(400,000) 
Foreign Exchange
600,000  
 
 
Balance at the end of the year
103,700,000  
 
71,200,000  
 
68,000,000