Derivative Instruments And Hedging Activities Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ 13,948	$ (5,516)
Sales and other revenues	3,897,247	4,128,427
Gain (Loss) on Price Risk Hedge Ineffectiveness	(17,039)	11,330
Cost of products sold	3,199,205	3,347,125
Foreign Currency Gain (Loss) [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Price Risk Hedge Ineffectiveness	(7,606)	16,197
Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	13,948	(5,516)
Commodity Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Price Risk Hedge Ineffectiveness	(2,016)	0
Commodity Contract [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Price Risk Hedge Ineffectiveness	(7,417)	(4,867)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Cost and Expense, Operating	1,642	1,191
Reclassification out of Accumulated Other Comprehensive Income [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Sales and other revenues	(1,799)	1,647
Cost of products sold	3,622	0
Operating Expenses	$ (181)	$ (456)