SIGNIFICANT ACCOUNTING POLICIES (Details 5) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Advertising Costs
Advertising expenses	$ 157.6	$ 106.3	$ 29.9
Minimum period to classify uncertain tax position liabilities as long term liabilities	1 year
Three largest U.S. wholesaler customers
Revenue Recognition
Number of largest wholesale customers	3
After merger | U.S. Dermatology
SIGNIFICANT ACCOUNTING POLICIES
Number of reporting units	1
After merger | U.S. Neurology and Other
SIGNIFICANT ACCOUNTING POLICIES
Number of reporting units	1
After merger | Canada and Australia
SIGNIFICANT ACCOUNTING POLICIES
Number of reporting units	2
After merger | Emerging Markets
SIGNIFICANT ACCOUNTING POLICIES
Number of reporting units	4