Derivative Instruments And Hedging Activities Derivatives and Hedging Instruments Gains Losses due to Settlements Hedge Ineffectiveness (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Trading Activity, Gains and Losses, Net [Line Items]
Cost of products sold	$ 3,704,884	$ 3,595,916	$ 6,904,089	$ 6,943,041
Sales and other revenues	4,782,615	4,471,236	8,679,862	8,599,663
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(6,014)	1,521	7,934	(3,995)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Other Cost and Expense, Operating	5,321	(5,598)	6,963	(4,407)
Commodity Contract [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(6,014)	1,521	7,934	(3,995)
Commodity Contract [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Cost of products sold	5,674	0	9,295	0
Sales and other revenues	0	(5,317)	(1,799)	(3,671)
Operating Expenses	$ (353)	$ (281)	$ (533)	$ (736)

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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-Publisher FASB
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Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective.

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