Intangible Assets and Goodwill Intangible Assets and Goodwill Narrative (Details) (USD $)	12 Months Ended		6 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013 YM Biosciences [Member]	Dec. 31, 2013 YM Biosciences [Member]	Dec. 31, 2013 Cost of Sales [Member]	Dec. 31, 2011 Cost of Sales [Member]
Goodwill [Line Items]
Total Consideration Transferred			$ 487,600,000
Amortization of Intangible Assets		63,300,000			143,300,000	69,600,000
Finite-Lived Intangible Asset, Useful Life	15 years
Goodwill, Acquired During Period				$ 127,238,000