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+ Details

Intangible Assets (Schedule Of Changes In The Carrying Amount Of Goodwill) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010	Apr. 02, 2011 Calistoga Pharmaceuticals, Inc. [Member]	Mar. 31, 2011 Calistoga Pharmaceuticals, Inc. [Member]	Jan. 14, 2011 Arresto Biosciences, Inc. [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Balance at December 31, 2010	$ 1,004,102	$ 532,669
Goodwill resulting from acquisition			336,951	336,951	134,482
Balance at September 30, 2011	$ 1,004,102	$ 532,669