Derivative Instruments and Hedging Activities Location of Gain Loss in Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Economic Hedges, Gain (Loss)	$ 36,079	$ 68,324	$ 15,501
Cost of products sold
Derivative Instruments, Gain (Loss) [Line Items]
Economic Hedges, Gain (Loss)	48,082	68,509	20,751
Operating expenses
Derivative Instruments, Gain (Loss) [Line Items]
Economic Hedges, Gain (Loss)	$ (12,003)	$ (185)	$ (5,250)