Equity Method Investments (Narrative) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Dec. 04, 2013
Schedule of Equity Method Investments [Line Items]
Number of equity method investments	6		6
Equity method investments summarized financial data basis			100.00%
Loss from equity method investments	$ 29.7	$ 27.8	$ 85.5	$ 77.5
Clean energy investments
Schedule of Equity Method Investments [Line Items]
Number of equity method investments	5		5
Sagent Agila | Agila Specialties | Equity method investments
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage					50.00%