Restructuring (Summary of Restructuring Actions) (Details)	3 Months Ended
	Mar. 31, 2016 USD ($) employee	Mar. 31, 2015 USD ($)
Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 4,400,000
Astora Restructuring
Restructuring Cost and Reserve [Line Items]
Number of positions reduced | employee	250
Restructuring expenses	$ 60,673,000	$ 0
Astora Restructuring | Employee Severance and Other Benefit-Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	16,149,000
Astora Restructuring | Contract Termination Charges
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	10,224,000
Astora Restructuring | Asset Impairment Charges
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	21,179,000
Astora Restructuring | Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 13,121,000