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ACQUISITIONS (Details 3) (USD $)
3 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Sep. 16, 2011
EDT
Mar. 31, 2012
In-process research and development
Mar. 31, 2012
In-process research and development
EDT
item
Sep. 16, 2011
In-process research and development
EDT
Mar. 31, 2012
Collaboration agreements
EDT
Sep. 16, 2011
Collaboration agreements
EDT
Mar. 31, 2012
NanoCrystal technology
EDT
Sep. 16, 2011
NanoCrystal technology
EDT
Mar. 31, 2012
OCR technology
EDT
Sep. 16, 2011
OCR technology
EDT
Sep. 16, 2011
Trademark
EDT
Intangible assets acquired                      
Intangible assets acquired, finite-lived $ 689,000,000         $ 499,700,000   $ 74,600,000   $ 66,300,000 $ 2,600,000
Intangible assets acquired, indefinite-lived       45,800,000              
Estimated useful life of intangible assets acquired         12 years   13 years   12 years    
Impairment charge   $ 45,800,000 $ 45,800,000                
Discount rate (as a percent)         14.50%   14.50%   14.50%    
Number of products     3