Intangible Assets and Goodwill Intangible Assets and Goodwill (Narrative) (Details) (USD $)	9 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 YM Biosciences [Member]	Feb. 08, 2013 YM Biosciences [Member]	Sep. 30, 2013 Cost of Sales [Member]	Sep. 30, 2012 Cost of Sales [Member]	Sep. 30, 2013 Cost of Sales [Member]	Sep. 30, 2012 Cost of Sales [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Fair Value of Acquired Assets and Assumed Liabilities			$ 487,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets				362,700,000
Goodwill	1,188,157,000	1,060,919,000		127,200,000
Amortization of Finite-Lived Intangible Assets					$ 21,300,000	$ 15,800,000	$ 63,800,000	$ 47,500,000
Finite-Lived Intangible Asset, Useful Life	11 years