Equity Method Investments (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 04, 2013
Schedule of Equity Method Investments [Line Items]
Loss from equity method investments	$ 112.8	$ 105.1	$ 91.4
Clean energy investments
Schedule of Equity Method Investments [Line Items]
Number of equity method investments	5
Sagent Agila | Agila Specialties | Equity method investments
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				50.00%