Segment Information (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Revenue from External Customer [Line Items]
Revenues from anti-CD20 therapeutic programs in percentage	13.00%	11.00%	12.00%
Long-lived assets related to operations in Denmark	$ 3,182.4	$ 2,501.8	$ 2,187.6
Segment Information (Textual) [Abstract]
Number of reportable segment | segment	1
Distributor One
Revenue from External Customer [Line Items]
Entity wide percentage of revenue from major distributors	34.00%	35.00%	34.00%
Distributor Two
Revenue from External Customer [Line Items]
Entity wide percentage of revenue from major distributors	21.00%	22.00%	26.00%
Solothurn
Revenue from External Customer [Line Items]
Long-lived assets related to operations in Denmark	$ 1,215.7	$ 545.5	$ 161.5
DENMARK
Revenue from External Customer [Line Items]
Long-lived assets related to operations in Denmark	$ 707.1	$ 643.6	$ 684.9