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183 - Disclosure - Stockholders' Equity - Summary of Changes in Restricted Stock Grants (Detail)
(http://www.watson.com/taxonomy/role/DisclosureStockholdersEquitySummaryOfChangesInRestrictedStockGrants)
TableSchedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000884629 (http://www.sec.gov/CIK)
Period [Axis]2012-01-01 - 2012-12-31
Legal Entity [Axis]Entity [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]Award Type [Axis]
Restricted Stock [Member]Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]
Shares, Restricted shares outstanding, Beginning Balance
2,500,000  
 
Shares, Granted
900,000  
 
Shares, Vested
(700,000) 
 
Shares, Cancelled
(100,000) 
 
Shares, Restricted shares outstanding, Ending Balance
2,600,000  
 
 
 
Weighted Average Grant Date Fair Value, Restricted shares outstanding, Beginning Balance
44.37  
 
Weighted Average Grant Date Fair Value, Granted
66.03  
 
Weighted Average Grant Date Fair Value, Vested
62.84  
 
Weighted Average Grant Date Fair Value, Cancelled
51.49  
 
Weighted Average Grant Date Fair Value, Restricted shares outstanding, Ending Balance
46.92  
 
 
 
Weighted Average Remaining Contractual Term (Years), Restricted shares outstanding, Beginning Balance
P1Y6M 
 
Weighted Average Remaining Contractual Term (Years), Granted
xsi:nil 
 
Weighted Average Remaining Contractual Term (Years), Vested
xsi:nil 
 
Weighted Average Remaining Contractual Term (Years), Cancelled
xsi:nil 
xsi:nil 
Weighted Average Remaining Contractual Term (Years), Restricted shares outstanding, Ending Balance
P1Y4M24D 
 
 
 
Aggregate Intrinsic Value, Restricted shares outstanding, Beginning Balance
110.8  
 
Aggregate Intrinsic Value, Granted
64.9  
 
Aggregate Intrinsic Value, Vested
(46.9) 
 
Aggregate Intrinsic Value, Cancelled
(6.0) 
 
Aggregate Intrinsic Value, Restricted shares outstanding, Ending Balance
122.8