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Segment Information (Summary Of Financial Data) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Revenues		$ 841,852	$ 742,797	$ 2,478,783	$ 2,225,675
Costs of goods sold		758,883	679,348	2,293,095	2,048,379
Operating income (loss)		30,855	19,833	35,618	48,339
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Costs of goods sold		(896,247)	(650,929)	(2,543,639)	(2,049,522)
Operating income (loss)		141	1,882	491	5,264
Revenue From External Customers [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	841,852	742,797	2,478,783	2,225,675
Intersegment Revenue [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	(896,107)	(649,047)	(2,543,149)	(2,044,338)
Revenue Including Intersegment Activity [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	1,737,959	1,391,844	5,021,932	4,270,013
Ethanol Production [Member]
Segment Reporting Information [Line Items]
Costs of goods sold		494,225	365,348	1,410,720	1,184,595
Operating income (loss)		15,311	5,528	(7,385)	43,139
Ethanol Production [Member] | Revenue From External Customers [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	74,892	37,702	222,424	140,640
Ethanol Production [Member] | Intersegment Revenue [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	457,549	352,215	1,249,333	1,145,879
Ethanol Production [Member] | Revenue Including Intersegment Activity [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	532,441	389,917	1,471,757	1,286,519
Agribusiness [Member]
Segment Reporting Information [Line Items]
Costs of goods sold		434,582	307,995	1,278,211	962,979
Operating income (loss)		6,251	365	15,039	5,833
Agribusiness [Member] | Revenue From External Customers [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	83,615	54,519	242,049	191,495
Agribusiness [Member] | Intersegment Revenue [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	359,715	255,671	1,058,813	783,388
Agribusiness [Member] | Revenue Including Intersegment Activity [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	443,330	310,190	1,300,862	974,883
Marketing And Distribution [Member]
Segment Reporting Information [Line Items]
Costs of goods sold		726,323	656,934	2,147,803	1,950,327
Operating income (loss)		5,252	9,406	13,908	17,446
Marketing And Distribution [Member] | Revenue From External Customers [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	681,279	648,413	2,008,268	1,887,184
Marketing And Distribution [Member] | Intersegment Revenue [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	54,704	21,914	165,558	93,176
Marketing And Distribution [Member] | Revenue Including Intersegment Activity [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	735,983	670,327	2,173,826	1,980,360
Partnership [Member]
Segment Reporting Information [Line Items]
Operating income (loss)		15,084	11,030	42,958	416
Partnership [Member] | Revenue From External Customers [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	2,066	2,163	6,042	6,356
Partnership [Member] | Intersegment Revenue [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	24,139	19,247	69,445	21,895
Partnership [Member] | Revenue Including Intersegment Activity [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	26,205	21,410	75,487	28,251
Corporate Activities [Member]
Segment Reporting Information [Line Items]
Operating income (loss)		$ (11,184)	$ (8,378)	$ (29,393)	$ (23,759)
[1] Revenues from external customers include realized gains and losses from derivative financial instruments.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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