Derivative Instruments And Hedging Activities Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ (6,014)	$ 1,521	$ 7,934	$ (3,995)
Sales and other revenues	4,782,615	4,471,236	8,679,862	8,599,663
Gain (Loss) on Price Risk Hedge Ineffectiveness	(6,011)	1,898	(23,050)	13,228
Cost of products sold	3,704,884	3,595,916	6,904,089	6,943,041
Foreign Currency Gain (Loss) [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Price Risk Hedge Ineffectiveness	(7,090)	9,359	(14,696)	25,556
Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(6,014)	1,521	7,934	(3,995)
Commodity Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Price Risk Hedge Ineffectiveness	741	0
Commodity Contract [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Price Risk Hedge Ineffectiveness	338	(7,461)	(7,079)	(12,328)
Commodity Contract [Member] | Operating Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Price Risk Hedge Ineffectiveness			(1,275)	0
Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Cost and Expense, Operating	5,321	(5,598)	6,963	(4,407)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Sales and other revenues	0	(5,317)	(1,799)	(3,671)
Cost of products sold	5,674	0	9,295	0
Operating Expenses	$ (353)	$ (281)	$ (533)	$ (736)